--- a/dom/media/ADTSDecoder.cpp
+++ b/dom/media/ADTSDecoder.cpp
@@ -36,16 +36,17 @@ ADTSDecoder::IsEnabled()
   return platform->SupportsMimeType(NS_LITERAL_CSTRING("audio/mp4a-latm"),
                                     /* DecoderDoctorDiagnostics* */ nullptr);
 }
 
 /* static */ bool
 ADTSDecoder::CanHandleMediaType(const nsACString& aType,
                                 const nsAString& aCodecs)
 {
-  if (aType.EqualsASCII("audio/aac") || aType.EqualsASCII("audio/aacp")) {
+  if (aType.EqualsASCII("audio/aac") || aType.EqualsASCII("audio/aacp") ||
+      aType.EqualsASCII("audio/x-aac")) {
     return IsEnabled() && (aCodecs.IsEmpty() || aCodecs.EqualsASCII("aac"));
   }
 
   return false;
 }
 
 } // namespace mozilla

--- a/dom/media/ADTSDecoder.h
+++ b/dom/media/ADTSDecoder.h
@@ -13,17 +13,17 @@ namespace mozilla {
 
 class ADTSDecoder : public MediaDecoder {
 public:
   // MediaDecoder interface.
   explicit ADTSDecoder(MediaDecoderOwner* aOwner) : MediaDecoder(aOwner) {}
   MediaDecoder* Clone(MediaDecoderOwner* aOwner) override;
   MediaDecoderStateMachine* CreateStateMachine() override;
 
-  // Returns true if the MP3 backend is pref'ed on, and we're running on a
+  // Returns true if the ADTS backend is pref'ed on, and we're running on a
   // platform that is likely to have decoders for the format.
   static bool IsEnabled();
   static bool CanHandleMediaType(const nsACString& aType,
                                  const nsAString& aCodecs);
 };
 
 } // namespace mozilla