diff --git a/quic/core/quic_flags_list.h b/quic/core/quic_flags_list.h
index 3d6f55e..33c84f4 100644
--- a/quic/core/quic_flags_list.h
+++ b/quic/core/quic_flags_list.h
@@ -98,7 +98,7 @@
 // If true, validate that peer owns the new address once the server detects peer migration or is probed from that address, and also apply anti-amplification limit while sending to that address.
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_server_reverse_validate_new_path3, true)
 // If true, when a packet is forced retransmitted, only set packet state if all data gets retransmitted.
-QUIC_FLAG(FLAGS_quic_restart_flag_quic_set_packet_state_if_all_data_retransmitted, false)
+QUIC_FLAG(FLAGS_quic_restart_flag_quic_set_packet_state_if_all_data_retransmitted, true)
 // If true, when client attempts TLS resumption, use token in session_cache_ instead of cached_states_ in QuicCryptoClientConfig.
 QUIC_FLAG(FLAGS_quic_reloadable_flag_quic_tls_use_token_in_session_cache, true)
 // When the flag is true, exit STARTUP after the same number of loss events as PROBE_UP.