diff --git a/quic/core/quic_flags_list.h b/quic/core/quic_flags_list.h
index 1726182..b7b7f15 100644
--- a/quic/core/quic_flags_list.h
+++ b/quic/core/quic_flags_list.h
@@ -72,7 +72,7 @@
 // If true, do not re-arm PTO while sending application data during handshake.
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_donot_rearm_pto_on_application_data_during_handshake, true)
 // If true, do not use the gQUIC common certificate set for certificate compression.
-QUIC_FLAG(FLAGS_quic_restart_flag_quic_no_common_cert_set, false)
+QUIC_FLAG(FLAGS_quic_restart_flag_quic_no_common_cert_set, true)
 // If true, drop unsent PATH_RESPONSEs and rely on peer\'s retry.
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_drop_unsent_path_response, true)
 // If true, enable server retransmittable on wire PING.