diff --git a/quiche/quic/core/quic_flags_list.h b/quiche/quic/core/quic_flags_list.h
index 745bebd..050f26e 100644
--- a/quiche/quic/core/quic_flags_list.h
+++ b/quiche/quic/core/quic_flags_list.h
@@ -80,7 +80,7 @@
 // If true, server proactively retires client issued connection ID on reverse path validation failure. 
 QUIC_FLAG(quic_reloadable_flag_quic_retire_cid_on_reverse_path_validation_failure, true)
 // If true, server sends bandwidth eastimate when network is idle for a while.
-QUIC_FLAG(quic_restart_flag_quic_enable_sending_bandwidth_estimate_when_network_idle, true)
+QUIC_FLAG(quic_restart_flag_quic_enable_sending_bandwidth_estimate_when_network_idle, false)
 // If true, set burst token to 2 in cwnd bootstrapping experiment.
 QUIC_FLAG(quic_reloadable_flag_quic_conservative_bursts, false)
 // If true, stop resetting ideal_next_packet_send_time_ in pacing sender.