diff --git a/dom/media/webrtc/MediaEngineWebRTCAudio.cpp b/dom/media/webrtc/MediaEngineWebRTCAudio.cpp
index abc7155ccbe5..dc50f8820f8f 100644
--- a/dom/media/webrtc/MediaEngineWebRTCAudio.cpp
+++ b/dom/media/webrtc/MediaEngineWebRTCAudio.cpp
@@ -511,10 +511,6 @@ nsresult MediaEngineWebRTCMicrophoneSource::SetTrack(
   MOZ_ASSERT(aStream);
   MOZ_ASSERT(IsTrackIDExplicit(aTrackID));
 
-  if (mStream && mStream->Graph() != aStream->Graph()) {
-    return NS_ERROR_NOT_AVAILABLE;
-  }
-
   MOZ_ASSERT(!mStream);
   MOZ_ASSERT(mTrackID == TRACK_NONE);
   MOZ_ASSERT(mPrincipal == PRINCIPAL_HANDLE_NONE);