diff --git a/quic/core/quic_flags_list.h b/quic/core/quic_flags_list.h
index 82b06d8..9bb54b2 100644
--- a/quic/core/quic_flags_list.h
+++ b/quic/core/quic_flags_list.h
@@ -36,7 +36,7 @@
 // If true, add missing MaybeUpdateAckTimeout for ack-eliciting frames.
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_add_missing_update_ack_timeout, true)
 // If true, allow QuicAlarm to be permanently cancelled.
-QUIC_FLAG(FLAGS_quic_restart_flag_quic_alarm_add_permanent_cancel, true)
+QUIC_FLAG(FLAGS_quic_restart_flag_quic_alarm_add_permanent_cancel, false)
 // If true, allow client to enable BBRv2 on server via connection option \'B2ON\'.
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_allow_client_enabled_bbr_v2, false)
 // If true, allow ticket open to be ignored in TlsServerHandshaker. Also fixes TlsServerHandshaker::ResumptionAttempted when handshake hints is used.