diff --git a/libwvdrmengine/cdm/core/src/license.cpp b/libwvdrmengine/cdm/core/src/license.cpp
index be9d22a9..82fd3891 100644
--- a/libwvdrmengine/cdm/core/src/license.cpp
+++ b/libwvdrmengine/cdm/core/src/license.cpp
@@ -617,22 +617,23 @@ CdmResponseType CdmLicense::HandleKeyResponse(
 
   // Extract mac key
   std::string mac_key_iv;
-  std::string mac_key;
+  std::string mac_keys;
   for (int i = 0; i < license.key_size(); ++i) {
     if (license.key(i).type() == License_KeyContainer::SIGNING) {
       mac_key_iv.assign(license.key(i).iv());
 
       // Strip off PKCS#5 padding
-      mac_key.assign(license.key(i).key().data(), MAC_KEY_SIZE);
+      mac_keys.assign(license.key(i).key().data(), 2 * MAC_KEY_SIZE);
     }
   }
   if (license.policy().can_renew() ||
-      (mac_key_iv.size() != 0 || mac_key.size() != 0)) {
-    if (mac_key_iv.size() != KEY_IV_SIZE || mac_key.size() != MAC_KEY_SIZE) {
+      (mac_key_iv.size() != 0 || mac_keys.size() != 0)) {
+    if (mac_key_iv.size() != KEY_IV_SIZE ||
+        mac_keys.size() != 2 * MAC_KEY_SIZE) {
       LOGE(
           "CdmLicense::HandleKeyResponse: mac key/iv size error"
           "(key/iv size expected: %d/%d, actual: %d/%d",
-          MAC_KEY_SIZE, KEY_IV_SIZE, mac_key.size(), mac_key_iv.size());
+          2 * MAC_KEY_SIZE, KEY_IV_SIZE, mac_keys.size(), mac_key_iv.size());
       return KEY_SIZE_ERROR_1;
     }
   }
@@ -675,11 +676,11 @@ CdmResponseType CdmLicense::HandleKeyResponse(
     entitlement_key_array_ = key_array;
     resp = HandleEntitlementKeyResponse(signed_response.msg(),
                                         signed_response.signature(), mac_key_iv,
-                                        mac_key, key_array, license);
+                                        mac_keys, key_array, license);
   } else if (kLicenseKeyTypeContent == key_type) {
     resp = HandleContentKeyResponse(signed_response.msg(),
                                     signed_response.signature(), mac_key_iv,
-                                    mac_key, key_array, license);
+                                    mac_keys, key_array, license);
   }
   return resp;
 }