diff --git a/quic/core/quic_flags_list.h b/quic/core/quic_flags_list.h
index 48976a5..bdf5853 100644
--- a/quic/core/quic_flags_list.h
+++ b/quic/core/quic_flags_list.h
@@ -53,7 +53,7 @@
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_send_goaway_with_connection_close, true)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_send_path_response, false)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_send_timestamps, false)
-QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_send_tls_crypto_error_code, false)
+QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_send_tls_crypto_error_code, true)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_single_ack_in_packet2, false)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_start_peer_migration_earlier, true)
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_testonly_default_false, false)