diff --git a/reactos/dll/win32/wdmaud.drv/wdmaud.c b/reactos/dll/win32/wdmaud.drv/wdmaud.c
index be0ed9c6a41..93d1c5825ed 100644
--- a/reactos/dll/win32/wdmaud.drv/wdmaud.c
+++ b/reactos/dll/win32/wdmaud.drv/wdmaud.c
@@ -440,7 +440,6 @@ WriteFileEx_Committer2(
     PSOUND_DEVICE SoundDevice;
     MMDEVICE_TYPE DeviceType;
     BOOL Ret;
-    DWORD BytesTransferred;
 
     VALIDATE_MMSYS_PARAMETER( SoundDeviceInstance );
     VALIDATE_MMSYS_PARAMETER( OffsetPtr );