diff --git a/quic/core/frames/quic_rst_stream_frame.cc b/quic/core/frames/quic_rst_stream_frame.cc
index b5730a5..91e44f0 100644
--- a/quic/core/frames/quic_rst_stream_frame.cc
+++ b/quic/core/frames/quic_rst_stream_frame.cc
@@ -11,6 +11,7 @@
     : control_frame_id(kInvalidControlFrameId),
       stream_id(0),
       error_code(QUIC_STREAM_NO_ERROR),
+      ietf_error_code(0),
       byte_offset(0) {}
 
 QuicRstStreamFrame::QuicRstStreamFrame(QuicControlFrameId control_frame_id,