diff --git a/quic/core/quic_session_test.cc b/quic/core/quic_session_test.cc
index 23cd87b..a287f55 100644
--- a/quic/core/quic_session_test.cc
+++ b/quic/core/quic_session_test.cc
@@ -115,6 +115,7 @@
     return QuicCryptoHandshaker::crypto_message_parser();
   }
   void OnPacketDecrypted(EncryptionLevel /*level*/) override {}
+  void OnOneRttPacketAcknowledged() override {}
   void OnHandshakeDoneReceived() override {}
   HandshakeState GetHandshakeState() const override {
     return one_rtt_keys_available() ? HANDSHAKE_COMPLETE : HANDSHAKE_START;