diff --git a/libwvdrmengine/oemcrypto/test/oec_session_util.cpp b/libwvdrmengine/oemcrypto/test/oec_session_util.cpp
index e6e4e329..f11676db 100644
--- a/libwvdrmengine/oemcrypto/test/oec_session_util.cpp
+++ b/libwvdrmengine/oemcrypto/test/oec_session_util.cpp
@@ -1380,13 +1380,15 @@ void EntitledMessage::LoadCasKeys(bool load_even, bool load_odd,
     even_key.content_key_data_iv = entitled_key_array_[0].content_key_data_iv;
     even_key.content_key_data = entitled_key_array_[0].content_key_data;
     even_key.content_iv = entitled_key_array_[0].content_iv;
+    even_key.cipher_mode = OEMCrypto_CipherMode_CBC;
   }
   if (has_odd) {
     odd_key.entitlement_key_id = entitled_key_array_[1].entitlement_key_id;
     odd_key.content_key_id = entitled_key_array_[1].content_key_id;
     odd_key.content_key_data_iv = entitled_key_array_[1].content_key_data_iv;
     odd_key.content_key_data = entitled_key_array_[1].content_key_data;
-    even_key.content_iv = entitled_key_array_[1].content_iv;
+    odd_key.content_iv = entitled_key_array_[1].content_iv;
+    odd_key.cipher_mode = OEMCrypto_CipherMode_CBC;
   }
 
   OEMCryptoResult sts = OEMCrypto_LoadCasECMKeys(