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) {