diff --git a/quic/core/quic_flags_list.h b/quic/core/quic_flags_list.h
index f2f803d..30820a0 100644
--- a/quic/core/quic_flags_list.h
+++ b/quic/core/quic_flags_list.h
@@ -20,7 +20,7 @@
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_conservative_bursts, false)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_conservative_cwnd_and_pacing_gains, false)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_count_bytes_on_alternative_path_seperately, true)
-QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_crypto_postpone_cert_validate_for_server, false)
+QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_crypto_postpone_cert_validate_for_server, true)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_default_enable_5rto_blackhole_detection2, true)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_default_on_pto, false)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_default_to_bbr, false)