--- a/dom/media/platforms/agnostic/WAVDecoder.cpp
+++ b/dom/media/platforms/agnostic/WAVDecoder.cpp
@@ -63,16 +63,18 @@ WaveDataDecoder::Init()
   return InitPromise::CreateAndResolve(TrackInfo::kAudioTrack, __func__);
 }
 
 nsresult
 WaveDataDecoder::Input(MediaRawData* aSample)
 {
   if (!DoDecode(aSample)) {
     mCallback->Error(MediaDataDecoderError::DECODE_ERROR);
+  } else {
+    mCallback->InputExhausted();
   }
   return NS_OK;
 }
 
 bool
 WaveDataDecoder::DoDecode(MediaRawData* aSample)
 {
   size_t aLength = aSample->Size();