diff --git a/src/audio_core/hle/wmf_decoder_utils.cpp b/src/audio_core/hle/wmf_decoder_utils.cpp
index e4055bfb2..21dd8a950 100644
--- a/src/audio_core/hle/wmf_decoder_utils.cpp
+++ b/src/audio_core/hle/wmf_decoder_utils.cpp
@@ -52,6 +52,8 @@ unique_mfptr<IMFTransform> MFDecoderInit(GUID audio_format) {
         if (FAILED(hr))
             transform = nullptr;
         activate[n]->Release();
+        if (SUCCEEDED(hr))
+            break;
     }
     if (transform == nullptr) {
         ReportError("Failed to initialize MFT", hr);
@@ -59,10 +61,11 @@ unique_mfptr<IMFTransform> MFDecoderInit(GUID audio_format) {
         return nullptr;
     }
     CoTaskMemFree(activate);
-    return std::move(transform);
+    return transform;
 }
 
-unique_mfptr<IMFSample> CreateSample(void* data, DWORD len, DWORD alignment, LONGLONG duration) {
+unique_mfptr<IMFSample> CreateSample(const void* data, DWORD len, DWORD alignment,
+                                     LONGLONG duration) {
     HRESULT hr = S_OK;
     unique_mfptr<IMFMediaBuffer> buf;
     unique_mfptr<IMFSample> sample;
diff --git a/src/audio_core/hle/wmf_decoder_utils.h b/src/audio_core/hle/wmf_decoder_utils.h
index f9a75af79..26e1217a2 100644
--- a/src/audio_core/hle/wmf_decoder_utils.h
+++ b/src/audio_core/hle/wmf_decoder_utils.h
@@ -74,7 +74,7 @@ struct ADTSMeta {
 
 // exported functions
 unique_mfptr<IMFTransform> MFDecoderInit(GUID audio_format = MFAudioFormat_AAC);
-unique_mfptr<IMFSample> CreateSample(void* data, DWORD len, DWORD alignment = 1,
+unique_mfptr<IMFSample> CreateSample(const void* data, DWORD len, DWORD alignment = 1,
                                      LONGLONG duration = 0);
 bool SelectInputMediaType(IMFTransform* transform, int in_stream_id, const ADTSData& adts,
                           const UINT8* user_data, UINT32 user_data_len,