diff --git a/media/engine/simulcast.cc b/media/engine/simulcast.cc
index 6d68453f7b..f2909d3f4c 100644
--- a/media/engine/simulcast.cc
+++ b/media/engine/simulcast.cc
@@ -61,14 +61,6 @@ static const int
     kDefaultConferenceNumberOfTemporalLayers[webrtc::kMaxSimulcastStreams] =
     {3, 3, 3, 3};
 
-void GetSimulcastSsrcs(const StreamParams& sp, std::vector<uint32_t>* ssrcs) {
-  const SsrcGroup* sim_group = sp.get_ssrc_group(kSimSsrcGroupSemantics);
-  if (sim_group) {
-    ssrcs->insert(
-        ssrcs->end(), sim_group->ssrcs.begin(), sim_group->ssrcs.end());
-  }
-}
-
 int FindSimulcastFormatIndex(int width, int height) {
   RTC_DCHECK_GE(width, 0);
   RTC_DCHECK_GE(height, 0);
diff --git a/media/engine/simulcast.h b/media/engine/simulcast.h
index 31fdcae80b..a2d27ed7b2 100644
--- a/media/engine/simulcast.h
+++ b/media/engine/simulcast.h
@@ -43,9 +43,6 @@ struct ScreenshareLayerConfig {
 
 int GetTotalMaxBitrateBps(const std::vector<webrtc::VideoStream>& streams);
 
-// Get the ssrcs of the SIM group from the stream params.
-void GetSimulcastSsrcs(const StreamParams& sp, std::vector<uint32_t>* ssrcs);
-
 // Get simulcast settings.
 // TODO(sprang): Remove default parameter when it's not longer referenced.
 std::vector<webrtc::VideoStream> GetSimulcastConfig(size_t max_streams,