--- a/dom/media/webrtc/MediaEngineWebRTCAudio.cpp
+++ b/dom/media/webrtc/MediaEngineWebRTCAudio.cpp
@@ -243,16 +243,18 @@ MediaEngineWebRTCMicrophoneSource::Recon
     nsAutoCString name;
     GetErrorName(rv, name);
     LOG(("Mic source %p Reconfigure() failed unexpectedly. rv=%s",
          this, name.Data()));
     Stop(aHandle);
     return NS_ERROR_UNEXPECTED;
   }
 
+  ApplySettings(mLastPrefs);
+
   return NS_OK;
 }
 
 bool operator == (const MediaEnginePrefs& a, const MediaEnginePrefs& b)
 {
   return !memcmp(&a, &b, sizeof(MediaEnginePrefs));
 };