--- a/dom/media/systemservices/CamerasChild.cpp
+++ b/dom/media/systemservices/CamerasChild.cpp
@@ -217,17 +217,17 @@ public:
       mReplyLock(aCamerasChild->mReplyMonitor),
       mRequestLock(aCamerasChild->mRequestMutex),
       mSuccess(true),
       mFailureValue(aFailureValue), mSuccessValue(aSuccessValue)
   {
     Dispatch();
   }
 
-  const T& ReturnValue() const {
+  T ReturnValue() const {
     if (mSuccess) {
       return mSuccessValue;
     } else {
       return mFailureValue;
     }
   }
 
   const bool& Success() const {