--- a/media/webrtc/signaling/src/jsep/JsepSessionImpl.cpp
+++ b/media/webrtc/signaling/src/jsep/JsepSessionImpl.cpp
@@ -327,19 +327,16 @@ JsepSessionImpl::SetParameters(const std
           return NS_ERROR_INVALID_ARG;
         }
       }
     }
   }
   if (addVideoExt != SdpDirectionAttribute::kInactive) {
     AddVideoRtpExtension("urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id", addVideoExt);
   }
-  if (addAudioExt != SdpDirectionAttribute::kInactive) {
-    AddAudioRtpExtension("urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id", addAudioExt);
-  }
 
   it->mTrack->SetJsConstraints(constraints);
 
   auto track = it->mTrack;
   if (track->GetDirection() == sdp::kSend) {
     // Establish minimum number of required SSRCs
     // Note that AddTrack is only for send direction
     size_t minimumSsrcCount = 0;