--- a/dom/media/MediaResult.h
+++ b/dom/media/MediaResult.h
@@ -56,20 +56,18 @@ public:
   bool operator!=(nsresult aResult) const { return aResult != mCode; }
   operator nsresult () const { return mCode; }
 
   nsCString Description() const
   {
     if (NS_SUCCEEDED(mCode)) {
       return nsCString();
     }
-    nsCString name;
-    GetErrorName(mCode, name);
     return nsPrintfCString("%s (0x%08" PRIx32 ")%s%s",
-                           name.get(),
+                           ErrorName().get(),
                            static_cast<uint32_t>(mCode),
                            mMessage.IsEmpty() ? "" : " - ",
                            mMessage.get());
   }
 
   void SetGPUCrashTimeStamp(const TimeStamp& aTime) { mGPUCrashTimeStamp = aTime; }
   const TimeStamp& GPUCrashTimeStamp() const { return mGPUCrashTimeStamp; }