diff --git a/quic/test_tools/quic_test_utils.h b/quic/test_tools/quic_test_utils.h
index bf8edcf..8f1cb7a 100644
--- a/quic/test_tools/quic_test_utils.h
+++ b/quic/test_tools/quic_test_utils.h
@@ -1054,7 +1054,7 @@
   MockSessionNotifier();
   ~MockSessionNotifier() override;
 
-  MOCK_METHOD2(OnFrameAcked, bool(const QuicFrame&, QuicTime::Delta));
+  MOCK_METHOD3(OnFrameAcked, bool(const QuicFrame&, QuicTime::Delta, QuicTime));
   MOCK_METHOD1(OnStreamFrameRetransmitted, void(const QuicStreamFrame&));
   MOCK_METHOD1(OnFrameLost, void(const QuicFrame&));
   MOCK_METHOD2(RetransmitFrames,