diff --git a/libwvdrmengine/cdm/core/include/cdm_engine.h b/libwvdrmengine/cdm/core/include/cdm_engine.h
index e85cc9ba..afa73db2 100644
--- a/libwvdrmengine/cdm/core/include/cdm_engine.h
+++ b/libwvdrmengine/cdm/core/include/cdm_engine.h
@@ -303,6 +303,12 @@ class CdmEngine {
 
   virtual size_t SessionSize() const { return session_map_.Size(); }
 
+  // This tells the OEMCrypto adapter to ignore the next |count| keyboxes and
+  // report that it needs provisioning instead.
+  static CdmResponseType SetDebugIgnoreKeyboxCount(uint32_t count) {
+    return CryptoSession::SetDebugIgnoreKeyboxCount(count);
+  }
+
   static CdmResponseType ParseDecryptHashString(const std::string& hash_string,
                                                 CdmSessionId* id,
                                                 uint32_t* frame_number,
diff --git a/libwvdrmengine/cdm/core/include/crypto_session.h b/libwvdrmengine/cdm/core/include/crypto_session.h
index f45b547f..b48cd4aa 100644
--- a/libwvdrmengine/cdm/core/include/crypto_session.h
+++ b/libwvdrmengine/cdm/core/include/crypto_session.h
@@ -295,6 +295,10 @@ class CryptoSession {
 
   bool needs_keybox_provisioning() const { return needs_keybox_provisioning_; }
 
+  // This tells the OEMCrypto adapter to ignore the next |count| keyboxes and
+  // report that it needs provisioning instead.
+  static CdmResponseType SetDebugIgnoreKeyboxCount(uint32_t count);
+
   // Returns a system-wide singleton instance of SystemFallbackPolicy
   // to be used for communicating OTA keybox provisioning state between
   // apps.  Returns a null pointer if OTA provisioning is not supported,
diff --git a/libwvdrmengine/cdm/core/include/oemcrypto_adapter.h b/libwvdrmengine/cdm/core/include/oemcrypto_adapter.h
index e12a2b99..1687fd11 100644
--- a/libwvdrmengine/cdm/core/include/oemcrypto_adapter.h
+++ b/libwvdrmengine/cdm/core/include/oemcrypto_adapter.h
@@ -15,6 +15,10 @@ namespace wvcdm {
 OEMCryptoResult OEMCrypto_InitializeAndCheckKeybox(
     bool* needs_keybox_provisioning);
 
+// This tells the OEMCrypto adapter to ignore the next |count| keyboxes and
+// report that it needs provisioning instead.
+OEMCryptoResult OEMCrypto_SetDebugIgnoreKeyboxCount(uint32_t count);
+
 // This attempts to open a session at the desired security level.
 // If one level is not available, the other will be used instead.
 OEMCryptoResult OEMCrypto_OpenSession(OEMCrypto_SESSION* session,
diff --git a/libwvdrmengine/cdm/core/src/crypto_session.cpp b/libwvdrmengine/cdm/core/src/crypto_session.cpp
index 11d5d9f3..349cd368 100644
--- a/libwvdrmengine/cdm/core/src/crypto_session.cpp
+++ b/libwvdrmengine/cdm/core/src/crypto_session.cpp
@@ -3031,6 +3031,11 @@ OEMCryptoResult CryptoSession::LegacyDecryptInChunks(
   return sts;
 }
 
+CdmResponseType CryptoSession::SetDebugIgnoreKeyboxCount(uint32_t count) {
+  OEMCryptoResult status = OEMCrypto_SetDebugIgnoreKeyboxCount(count);
+  return MapOEMCryptoResult(status, UNKNOWN_ERROR, "SetDebugIgnoreKeyboxCount");
+}
+
 okp::SystemFallbackPolicy* CryptoSession::GetOkpFallbackPolicy() {
   const auto getter = [&]() -> okp::SystemFallbackPolicy* {
     // If not set, then OTA keybox provisioning is not supported or
diff --git a/libwvdrmengine/cdm/core/src/oemcrypto_adapter_dynamic.cpp b/libwvdrmengine/cdm/core/src/oemcrypto_adapter_dynamic.cpp
index d28bf1b4..8d57fb3e 100644
--- a/libwvdrmengine/cdm/core/src/oemcrypto_adapter_dynamic.cpp
+++ b/libwvdrmengine/cdm/core/src/oemcrypto_adapter_dynamic.cpp
@@ -25,6 +25,7 @@
 #include <map>
 #include <memory>
 #include <mutex>
+#include <sstream>
 #include <string>
 #include <thread>
 
@@ -626,6 +627,70 @@ class WatchDog {
   uint32_t uid_;
 };
 
+// The DebugIgnoreKeyboxCount functions are related to testing the Keybox OTA
+// Reprovisioning solution. If a positive counter is set, then the keybox will
+// be ignored through that many initializations.
+std::string GetIgnoreCountFile() {
+  std::string path;
+  if (!wvcdm::Properties::GetDeviceFilesBasePath(wvcdm::kSecurityLevelL1,
+                                                 &path)) {
+    LOGW("DebugIgnoreKeyboxCount: Unable to get base path");
+    path = "/data/";
+  }
+  path += "debug_ignore_keybox_count.txt";
+  return path;
+}
+
+uint32_t GetDebugIgnoreKeyboxCount() {
+  const std::string filename = GetIgnoreCountFile();
+  wvcdm::FileSystem file_system;
+  if (!file_system.Exists(filename)) {
+    return 0;
+  }
+  auto file = file_system.Open(filename, file_system.kReadOnly);
+  if (!file) {
+    LOGE("Error opening %s", filename.c_str());
+    return 0;
+  }
+  ssize_t size = file_system.FileSize(filename);
+  std::string contents(size, ' ');
+  ssize_t size_read = file->Read(const_cast<char*>(contents.data()), size);
+  if (size != size_read) {
+    LOGE("Short ignore_debug_keybox_count = %zu", size_read);
+    return 0;
+  }
+  std::istringstream ss(contents);
+  uint32_t count = 0;
+  ss >> count;
+  if (ss.fail()) {
+    LOGE("Could not parse an integer from '%s'", contents.c_str());
+    count = 0;
+  }
+  LOGD("Using IgnoreDebugKeyboxCount = %u", count);
+  return count;
+}
+
+OEMCryptoResult SetDebugIgnoreKeyboxCount(uint32_t count) {
+  const std::string filename = GetIgnoreCountFile();
+  wvcdm::FileSystem file_system;
+  auto file =
+      file_system.Open(filename, file_system.kCreate | file_system.kTruncate);
+  if (!file) {
+    LOGE("Could not create file %s", filename.c_str());
+    return OEMCrypto_ERROR_UNKNOWN_FAILURE;
+  }
+  const std::string contents = std::to_string(count);
+  ssize_t size = contents.size();
+  ssize_t size_written = file->Write(contents.data(), size);
+  if (size != size_written) {
+    LOGE("Wrote %zd bytes of %s, not %zd, to file %s", size_written,
+         contents.c_str(), size, filename.c_str());
+    return OEMCrypto_ERROR_UNKNOWN_FAILURE;
+  }
+  LOGD("Wrote %u to %s", count, filename.c_str());
+  return OEMCrypto_SUCCESS;
+}
+
 struct LevelSession {
   FunctionPointers* fcn;
   OEMCrypto_SESSION session;
@@ -1218,7 +1283,12 @@ OEMCryptoResult OEMCrypto_InitializeAndCheckKeybox(
   if (status != OEMCrypto_SUCCESS) return status;
   const OEMCryptoResult keybox_status =
       gAdapter->ValidateOrInstallKeyboxOrCert();
-  if (keybox_status == OEMCrypto_ERROR_NEEDS_KEYBOX_PROVISIONING) {
+  uint32_t ignore_count = GetDebugIgnoreKeyboxCount();
+  if (keybox_status == OEMCrypto_ERROR_NEEDS_KEYBOX_PROVISIONING ||
+      ignore_count > 0) {
+    if (ignore_count > 0) {
+      LOGD("Ignoring keybox status %d", static_cast<int>(keybox_status));
+    }
     *needs_keybox_provisioning = true;
     return OEMCrypto_SUCCESS;
   }
@@ -1494,6 +1564,10 @@ OEMCryptoResult OEMCrypto_GetOEMPublicCertificate(uint8_t* public_cert,
   }
   return OEMCrypto_ERROR_NOT_IMPLEMENTED;
 }
+
+OEMCryptoResult OEMCrypto_SetDebugIgnoreKeyboxCount(uint32_t count) {
+  return SetDebugIgnoreKeyboxCount(count);
+}
 }  // namespace wvcdm
 
 extern "C" OEMCryptoResult OEMCrypto_SetSandbox(const uint8_t* sandbox_id,
@@ -2818,5 +2892,23 @@ extern "C" OEMCryptoResult OEMCrypto_ProcessOTAKeybox(OEMCrypto_SESSION session,
   const FunctionPointers* fcn = gAdapter->GetFunctionPointers(kLevelDefault);
   if (!fcn) return OEMCrypto_ERROR_UNKNOWN_FAILURE;
   if (fcn->ProcessOTAKeybox == nullptr) return OEMCrypto_ERROR_NOT_IMPLEMENTED;
-  return fcn->ProcessOTAKeybox(session, buffer, buffer_length, use_test_key);
+  const OEMCryptoResult result =
+      fcn->ProcessOTAKeybox(session, buffer, buffer_length, use_test_key);
+  if (result == OEMCrypto_SUCCESS) {
+    // If the new keybox was installed, and we had been told to ignore a valid
+    // keybox, then we should now decrement the ignore counter.
+    int32_t ignore_count = GetDebugIgnoreKeyboxCount();
+    if (ignore_count > 0) {
+      ignore_count--;
+      const OEMCryptoResult save_result =
+          SetDebugIgnoreKeyboxCount(ignore_count);
+      if (save_result == OEMCrypto_SUCCESS) {
+        LOGD("Installed OTA keybox. Ignore count is now %u", ignore_count);
+      } else {
+        LOGE("Installed OTA keybox. save ignore count failed %d, count=%u",
+             static_cast<int>(save_result), ignore_count);
+      }
+    }
+  }
+  return result;
 }
diff --git a/libwvdrmengine/cdm/core/test/keybox_ota_test.cpp b/libwvdrmengine/cdm/core/test/keybox_ota_test.cpp
index 36dd09a9..d7c965e6 100644
--- a/libwvdrmengine/cdm/core/test/keybox_ota_test.cpp
+++ b/libwvdrmengine/cdm/core/test/keybox_ota_test.cpp
@@ -82,6 +82,27 @@ TEST_F(CdmOtaKeyboxTest, BasicTest) {
   FileSystem file_system;
   TestCdmEngine cdm_engine(&file_system,
                            std::shared_ptr<EngineMetrics>(new EngineMetrics));
+  // Create a singleton crypto session to prevent OEMCrypto from being
+  // terminated. This is really only needed when running the test against the
+  // testbed OEMCrypto which does save its keybox across init/terminate.
+  metrics::CryptoMetrics crypto_metrics;
+  std::unique_ptr<CryptoSession> crypto_session(
+      CryptoSession::MakeCryptoSession(&crypto_metrics));
+  // Remove any existing certificate.
+  cdm_engine.Unprovision(kSecurityLevelL1);
+  std::string system_id;
+  CdmResponseType system_id_status =
+      cdm_engine.QueryStatus(kLevelDefault, QUERY_KEY_SYSTEM_ID, &system_id);
+  if (system_id_status == NO_ERROR) {
+    std::cout << "             "
+              << "System ID before test: " << system_id << "\n";
+  } else {
+    std::cout << "             "
+              << "Could not find system id before test. ";
+    PrintTo(system_id_status, &std::cout);
+    std::cout << "\n";
+  }
+
   CdmSessionId session_id;
   ConfigTestEnv config = WvCdmTestBase::default_config_;
 
@@ -97,6 +118,17 @@ TEST_F(CdmOtaKeyboxTest, BasicTest) {
   }
   std::cout << "First provisioning process.\n";
   Provision(&cdm_engine);
+  system_id_status =
+      cdm_engine.QueryStatus(kLevelDefault, QUERY_KEY_SYSTEM_ID, &system_id);
+  if (system_id_status == NO_ERROR) {
+    std::cout << "             "
+              << "System ID after first provisioning: " << system_id << "\n";
+  } else {
+    std::cout << "             "
+              << "Could not find system id after first provisioning. ";
+    PrintTo(system_id_status, &std::cout);
+    std::cout << "\n";
+  }
 
   // After the first provisioning pass, we try to open a session again.  If the
   // first provisioning was to install a keybox, this provisioning should be to
@@ -111,6 +143,17 @@ TEST_F(CdmOtaKeyboxTest, BasicTest) {
   }
   std::cout << "Second provisioning process.\n";
   Provision(&cdm_engine);
+  system_id_status =
+      cdm_engine.QueryStatus(kLevelDefault, QUERY_KEY_SYSTEM_ID, &system_id);
+  if (system_id_status == NO_ERROR) {
+    std::cout << "             "
+              << "System ID after second provisioning: " << system_id << "\n";
+  } else {
+    std::cout << "             "
+              << "Could not find system id after second provisioning. ";
+    PrintTo(system_id_status, &std::cout);
+    std::cout << "\n";
+  }
 
   // After the second provisioning pass, we should be able to open a session
   // and continue.
diff --git a/libwvdrmengine/cdm/core/test/test_printers.cpp b/libwvdrmengine/cdm/core/test/test_printers.cpp
index 1027e598..0b1b6b1e 100644
--- a/libwvdrmengine/cdm/core/test/test_printers.cpp
+++ b/libwvdrmengine/cdm/core/test/test_printers.cpp
@@ -1213,6 +1213,16 @@ void PrintTo(const enum OEMCryptoResult& value, ::std::ostream* os) {
     case ODK_STALE_RENEWAL:
       *os << "STALE_RENEWAL";
       break;
+    // OPK Values.
+    case OPK_ERROR_INCOMPATIBLE_VERSION:
+      *os << "INCOMPATIBLE_VERSION";
+      break;
+    case OPK_ERROR_REMOTE_CALL:
+      *os << "REMOTE_CALL";
+      break;
+    case OPK_ERROR_NO_PERSISTENT_DATA:
+      *os << "NO_PERSISTENT_DATA";
+      break;
   }
 }
 namespace okp {
diff --git a/libwvdrmengine/cdm/include/wv_content_decryption_module.h b/libwvdrmengine/cdm/include/wv_content_decryption_module.h
index 4095a6ca..06a75613 100644
--- a/libwvdrmengine/cdm/include/wv_content_decryption_module.h
+++ b/libwvdrmengine/cdm/include/wv_content_decryption_module.h
@@ -159,6 +159,8 @@ class WvContentDecryptionModule : public android::RefBase, public TimerHandler {
   // Closes the CdmEngine and sessions associated with the given CdmIdentifier.
   virtual CdmResponseType CloseCdm(const CdmIdentifier& identifier);
 
+  virtual CdmResponseType SetDebugIgnoreKeyboxCount(uint32_t count);
+
   virtual CdmResponseType SetDecryptHash(const std::string& hash_data,
                                          CdmSessionId* session_id);
   virtual CdmResponseType GetDecryptHashError(const CdmSessionId& session_id,
diff --git a/libwvdrmengine/cdm/src/wv_content_decryption_module.cpp b/libwvdrmengine/cdm/src/wv_content_decryption_module.cpp
index 53763827..ded47c25 100644
--- a/libwvdrmengine/cdm/src/wv_content_decryption_module.cpp
+++ b/libwvdrmengine/cdm/src/wv_content_decryption_module.cpp
@@ -500,6 +500,11 @@ CdmResponseType WvContentDecryptionModule::CloseCdm(
   return NO_ERROR;
 }
 
+CdmResponseType WvContentDecryptionModule::SetDebugIgnoreKeyboxCount(
+    uint32_t count) {
+  return CdmEngine::SetDebugIgnoreKeyboxCount(count);
+}
+
 CdmResponseType WvContentDecryptionModule::SetDecryptHash(
     const std::string& hash_data, CdmSessionId* id) {
   if (id == nullptr) {
diff --git a/libwvdrmengine/mediadrm/src/WVDrmPlugin.cpp b/libwvdrmengine/mediadrm/src/WVDrmPlugin.cpp
index 71ec8a31..b7e67d53 100644
--- a/libwvdrmengine/mediadrm/src/WVDrmPlugin.cpp
+++ b/libwvdrmengine/mediadrm/src/WVDrmPlugin.cpp
@@ -13,6 +13,7 @@
 #include <endian.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sstream>
 #include <string>
 #include <vector>
 
@@ -667,6 +668,17 @@ status_t WVDrmPlugin::setPropertyString(const String8& name,
     } else {
       mCdmIdentifier.origin = value.string();
     }
+  } else if (name == "debugIgnoreKeyboxCount") {
+    std::istringstream ss(value.string());
+    uint32_t count = 0;
+    ss >> count;
+    if (ss.fail()) {
+      ALOGE("Could not parse an integer from '%s'", value.string());
+      count = 0;
+      return android::BAD_VALUE;
+    }
+    CdmResponseType res = mCDM->SetDebugIgnoreKeyboxCount(count);
+    return mapCdmResponseType(res);
   } else if (name == "decryptHash") {
     CdmSessionId sessionId;
     CdmResponseType res =
diff --git a/libwvdrmengine/mediadrm/src_hidl/WVDrmPlugin.cpp b/libwvdrmengine/mediadrm/src_hidl/WVDrmPlugin.cpp
index cb680fff..cb3709f9 100644
--- a/libwvdrmengine/mediadrm/src_hidl/WVDrmPlugin.cpp
+++ b/libwvdrmengine/mediadrm/src_hidl/WVDrmPlugin.cpp
@@ -12,6 +12,7 @@
 #include <cstring>
 #include <list>
 #include <stdlib.h>
+#include <sstream>
 #include <string>
 
 #include "WVDrmPlugin.h"
@@ -1431,6 +1432,17 @@ Return<Status> WVDrmPlugin::setPropertyString(const hidl_string& propertyName,
         return Status::BAD_VALUE;
       }
     }
+  } else if (name == "debugIgnoreKeyboxCount") {
+    std::istringstream ss(_value);
+    uint32_t count = 0;
+    ss >> count;
+    if (ss.fail()) {
+      ALOGE("Could not parse an integer from '%s'", _value.c_str());
+      count = 0;
+      return Status::BAD_VALUE;
+    }
+    CdmResponseType res = mCDM->SetDebugIgnoreKeyboxCount(count);
+    return mapCdmResponseType(res);
   } else if (name == "decryptHash") {
     wvcdm::CdmSessionId sessionId;
     CdmResponseType res =
diff --git a/libwvdrmengine/oemcrypto/include/OEMCryptoCENC.h b/libwvdrmengine/oemcrypto/include/OEMCryptoCENC.h
index 439b5b76..0d1bba3b 100644
--- a/libwvdrmengine/oemcrypto/include/OEMCryptoCENC.h
+++ b/libwvdrmengine/oemcrypto/include/OEMCryptoCENC.h
@@ -57,7 +57,7 @@
  * a root of trust to secure content on a device that uses Provisioning
  * 3.0. Factory Provisioning a device is related to manufacturing methods. This
  * section describes the API that installs the Widevine Keybox and the
- * recommended methods for the OEM’s factory provisioning procedure.
+ * recommended methods for the OEM's factory provisioning procedure.
  *
  * Starting with API version 10, devices should have two keyboxes.  One is the
  * production keybox which may be installed in the factory, or using
@@ -69,7 +69,7 @@
  * OEMCrypto_Terminate has been called, the production keybox should be active
  * again.
  *
- * API functions marked as optional may be used by the OEM’s factory
+ * API functions marked as optional may be used by the OEM's factory
  * provisioning procedure and implemented in the library, but are not called
  * from the Widevine DRM Plugin during normal operation.
  *
@@ -90,7 +90,7 @@
  * functions in this section are for devices that are provisioned with an OEM
  * Certificate, i.e. Provisioning 3.0.
  *
- * API functions marked as optional may be used by the OEM’s factory
+ * API functions marked as optional may be used by the OEM's factory
  * provisioning procedure and implemented in the library, but are not called
  * from the Widevine DRM Plugin during normal operation.
  *
@@ -624,10 +624,17 @@ typedef enum OEMCrypto_ProvisioningMethod {
 #define OEMCrypto_MinorAPIVersion             _oecc108
 #define OEMCrypto_AllocateSecureBuffer        _oecc109
 #define OEMCrypto_FreeSecureBuffer            _oecc110
-// Reserved 111-112
+#define OEMCrypto_CreateEntitledKeySession    _oecc111
+#define OEMCrypto_RemoveEntitledKeySession    _oecc112
 #define OEMCrypto_GenerateOTARequest          _oecc113
 #define OEMCrypto_ProcessOTAKeybox            _oecc114
-// Reserved 115-121
+#define OEMCrypto_OPK_SerializationVersion    _oecc115
+#define OEMCrypto_GetBootCertificateChain     _oecc116
+#define OEMCrypto_GenerateCertificateKeyPair  _oecc117
+#define OEMCrypto_InstallOemPrivateKey        _oecc118
+#define OEMCrypto_ReassociateEntitledKeySession _oecc119
+#define OEMCrypto_LoadCasECMKeys              _oecc120
+#define OEMCrypto_LoadEntitledContentKeys_v17 _oecc121  // place holder for v17.
 // clang-format on
 
 /// @addtogroup initcontrol
@@ -4728,6 +4735,39 @@ OEMCryptoResult OEMCrypto_FreeSecureBuffer(
 
 /// @}
 
+/*
+ * OEMCrypto_OPK_SerializationVersion
+ *   Check the serialization protocol version used by the OEMCrypto Porting Kit
+ *   (OPK). If the OPK is not used, this function must return
+ *   OEMCrypto_ERROR_NOT_IMPLEMENTED.  The serialization version is expressed as
+ *   |major.minor|, where |major| and |minor| are integers. The TEE and REE
+ *   serialization versions must match in order for OEMCrypto to communicate
+ *   with the TEE. If the serialization versions do not match, calls to other
+ *   OEMCrypto functions will return OPK_ERROR_INCOMPATIBLE_VERSION. A match is
+ *   achieved if the |major| fields of the TEE and REE versions are the
+ *   same. Differences in only the |minor| fields indicates that the protocols
+ *   are different but are still compatible.
+ *
+ * @param[in,out] ree_major: pointer to memory to receive the REE's |major|
+ *    version. On input, *ree_major may be zero to request the serialization
+ *    version of the REE. If *ree_major is non-zero, this function will test the
+ *    TEE's compatibility using the specified REE major version.
+ * @param[in,out] ree_minor: pointer to memory to receive the REE's |minor|
+ *    version. On input, *ree_minor may be zero to request the serialization
+ *    version of the REE. If *ree_minor is non-zero, this function will test the
+ *    TEE's compatibility using the specified REE minor version.
+ * @param[out] tee_major: pointer to memory to receive the TEE's |major| version
+ * @param[out] tee_minor: pointer to memory to receive the TEE's |minor| version
+ *
+ * @retval OEMCrypto_SUCCESS success
+ * @retval OPK_ERROR_INCOMPATIBLE_VERSION
+ * @retval OEMCrypto_ERROR_NOT_IMPLEMENTED
+ */
+OEMCryptoResult OEMCrypto_OPK_SerializationVersion(uint32_t* ree_major,
+                                                   uint32_t* ree_minor,
+                                                   uint32_t* tee_major,
+                                                   uint32_t* tee_minor);
+
 /****************************************************************************/
 /****************************************************************************/
 /* The following functions are optional. They are only used if the device
diff --git a/libwvdrmengine/oemcrypto/odk/include/OEMCryptoCENCCommon.h b/libwvdrmengine/oemcrypto/odk/include/OEMCryptoCENCCommon.h
index b1ad6e97..2715ea27 100644
--- a/libwvdrmengine/oemcrypto/odk/include/OEMCryptoCENCCommon.h
+++ b/libwvdrmengine/oemcrypto/odk/include/OEMCryptoCENCCommon.h
@@ -97,6 +97,11 @@ typedef enum OEMCryptoResult {
   ODK_TIMER_EXPIRED                            = ODK_ERROR_BASE + 3,
   ODK_UNSUPPORTED_API                          = ODK_ERROR_BASE + 4,
   ODK_STALE_RENEWAL                            = ODK_ERROR_BASE + 5,
+  /* OPK return values */
+  OPK_ERROR_BASE                               = 2000,
+  OPK_ERROR_REMOTE_CALL                        = OPK_ERROR_BASE,
+  OPK_ERROR_INCOMPATIBLE_VERSION               = OPK_ERROR_BASE + 1,
+  OPK_ERROR_NO_PERSISTENT_DATA                 = OPK_ERROR_BASE + 2,
 } OEMCryptoResult;
 /* clang-format on */
 
diff --git a/libwvdrmengine/oemcrypto/odk/test/odk_test_helper.cpp b/libwvdrmengine/oemcrypto/odk/test/odk_test_helper.cpp
index d96d3c45..118829d2 100644
--- a/libwvdrmengine/oemcrypto/odk/test/odk_test_helper.cpp
+++ b/libwvdrmengine/oemcrypto/odk/test/odk_test_helper.cpp
@@ -482,11 +482,6 @@ void ODK_BuildMessageBuffer(ODK_CoreMessage* core_message,
       {ODK_UINT32, &(core_message->nonce_values.session_id), "session_id"},
   };
 
-  uint32_t header_size = 0;
-  for (auto& field : total_fields) {
-    header_size += ODK_FieldLength(field.type);
-  }
-
   total_fields.insert(total_fields.end(), extra_fields.begin(),
                       extra_fields.end());
   for (auto& field : total_fields) {