diff --git a/quic/core/quic_packets.h b/quic/core/quic_packets.h
index cf6099e..3af15ea 100644
--- a/quic/core/quic_packets.h
+++ b/quic/core/quic_packets.h
@@ -425,6 +425,7 @@
   // Fields below are populated by QuicFramer::ProcessPacketDispatcher.
   PacketHeaderFormat form;
   bool version_flag;
+  bool use_length_prefix;
   QuicVersionLabel version_label;
   ParsedQuicVersion version;
   QuicConnectionId destination_connection_id;