diff --git a/src/audio/wasapi/SDL_wasapi_win32.c b/src/audio/wasapi/SDL_wasapi_win32.c
index 173ab00eb..1be1b4d10 100644
--- a/src/audio/wasapi/SDL_wasapi_win32.c
+++ b/src/audio/wasapi/SDL_wasapi_win32.c
@@ -53,7 +53,7 @@ static IMMDeviceEnumerator *enumerator = NULL;
 
 /* handle to Avrt.dll--Vista and later!--for flagging the callback thread as "Pro Audio" (low latency). */
 static HMODULE libavrt = NULL;
-typedef HANDLE(WINAPI *pfnAvSetMmThreadCharacteristicsW)(LPWSTR, LPDWORD);
+typedef HANDLE(WINAPI *pfnAvSetMmThreadCharacteristicsW)(LPCWSTR, LPDWORD);
 typedef BOOL(WINAPI *pfnAvRevertMmThreadCharacteristics)(HANDLE);
 static pfnAvSetMmThreadCharacteristicsW pAvSetMmThreadCharacteristicsW = NULL;
 static pfnAvRevertMmThreadCharacteristics pAvRevertMmThreadCharacteristics = NULL;