--- a/dom/media/hls/HLSDecoder.cpp
+++ b/dom/media/hls/HLSDecoder.cpp
@@ -34,20 +34,18 @@ HLSDecoder::CreateStateMachine()
                           GetVideoFrameContainer());
 
   return new MediaDecoderStateMachine(this, mReader);
 }
 
 ChannelMediaDecoder*
 HLSDecoder::Clone(MediaDecoderInit& aInit)
 {
-  if (!IsEnabled()) {
-    return nullptr;
-  }
-  return new HLSDecoder(aInit);
+  MOZ_CRASH("Clone is not supported");
+  return nullptr;
 }
 
 bool
 HLSDecoder::IsEnabled()
 {
   return MediaPrefs::HLSEnabled() && (jni::GetAPIVersion() >= 16);
 }