--- a/media/gmp-clearkey/0.1/ClearKeySessionManager.cpp
+++ b/media/gmp-clearkey/0.1/ClearKeySessionManager.cpp
@@ -136,16 +136,17 @@ ClearKeySessionManager::CreateSession(ui
     CK_LOGD("Failed to initialize session: %s", sessionId.c_str());
 
     const static char* message = "Failed to initialize session";
     mHost->OnRejectPromise(aPromiseId,
                            Error::kUnknownError,
                            0,
                            message,
                            strlen(message));
+    delete session;
 
     return;
   }
 
   mSessions[sessionId] = session;
 
   const vector<KeyId>& sessionKeys = session->GetKeyIds();
   vector<KeyId> neededKeys;