diff --git a/quic/core/frames/quic_stream_frame.cc b/quic/core/frames/quic_stream_frame.cc
index c7626d3..d0e65d2 100644
--- a/quic/core/frames/quic_stream_frame.cc
+++ b/quic/core/frames/quic_stream_frame.cc
@@ -49,4 +49,8 @@
          offset == rhs.offset;
 }
 
+bool QuicStreamFrame::operator!=(const QuicStreamFrame& rhs) const {
+  return !(*this == rhs);
+}
+
 }  // namespace quic
diff --git a/quic/core/frames/quic_stream_frame.h b/quic/core/frames/quic_stream_frame.h
index 5e7439d..5c5323b 100644
--- a/quic/core/frames/quic_stream_frame.h
+++ b/quic/core/frames/quic_stream_frame.h
@@ -33,6 +33,8 @@
 
   bool operator==(const QuicStreamFrame& rhs) const;
 
+  bool operator!=(const QuicStreamFrame& rhs) const;
+
   bool fin;
   QuicPacketLength data_length;
   QuicStreamId stream_id;