diff --git a/quiche/quic/core/quic_flags_list.h b/quiche/quic/core/quic_flags_list.h
index 39bb408..591e87c 100644
--- a/quiche/quic/core/quic_flags_list.h
+++ b/quiche/quic/core/quic_flags_list.h
@@ -68,7 +68,7 @@
 // If true, set burst token to 2 in cwnd bootstrapping experiment.
 QUIC_FLAG(quic_reloadable_flag_quic_conservative_bursts, false)
 // If true, unacked QPACK entries with no references will not be evicted.
-QUIC_FLAG(quic_reloadable_flag_quic_do_not_evict_unacked_entry, false)
+QUIC_FLAG(quic_reloadable_flag_quic_do_not_evict_unacked_entry, true)
 // If true, use BBRv2 as the default congestion controller. Takes precedence over --quic_default_to_bbr.
 QUIC_FLAG(quic_reloadable_flag_quic_default_to_bbr_v2, false)
 // If true, use a LRU cache to record client addresses of packets received on server\'s original address.