diff --git a/quic/test_tools/quic_test_utils.h b/quic/test_tools/quic_test_utils.h
index c9197f3..faa505d 100644
--- a/quic/test_tools/quic_test_utils.h
+++ b/quic/test_tools/quic_test_utils.h
@@ -804,7 +804,7 @@
   MOCK_CONST_METHOD1(SelectAlpn,
                      std::vector<quiche::QuicheStringPiece>::const_iterator(
                          const std::vector<quiche::QuicheStringPiece>&));
-  QuicCryptoServerStreamBase* CreateQuicCryptoServerStream(
+  std::unique_ptr<QuicCryptoServerStreamBase> CreateQuicCryptoServerStream(
       const QuicCryptoServerConfig* crypto_config,
       QuicCompressedCertsCache* compressed_certs_cache) override;