diff --git a/media/webrtc/signaling/src/mediapipeline/MediaPipelineFilter.cpp b/media/webrtc/signaling/src/mediapipeline/MediaPipelineFilter.cpp
index 8a103ba5905e..e8602327caa2 100644
--- a/media/webrtc/signaling/src/mediapipeline/MediaPipelineFilter.cpp
+++ b/media/webrtc/signaling/src/mediapipeline/MediaPipelineFilter.cpp
@@ -79,7 +79,7 @@ void MediaPipelineFilter::Update(const MediaPipelineFilter& filter_update) {
 bool
 MediaPipelineFilter::FilterSenderReport(const unsigned char* data,
                                         size_t len) const {
-  if (len < FIRST_SSRC_OFFSET) {
+  if (len < FIRST_SSRC_OFFSET + 4) {
     return false;
   }