diff --git a/sokol_audio.h b/sokol_audio.h
index 5d199423c..aff174f1a 100644
--- a/sokol_audio.h
+++ b/sokol_audio.h
@@ -1117,6 +1117,7 @@ _SOKOL_PRIVATE void _saudio_wasapi_release(void) {
 }
 
 _SOKOL_PRIVATE bool _saudio_backend_init(void) {
+    REFERENCE_TIME dur;
     if (FAILED(CoInitializeEx(0, COINIT_MULTITHREADED))) {
         SOKOL_LOG("sokol_audio wasapi: CoInitializeEx failed");
         return false;
@@ -1157,7 +1158,7 @@ _SOKOL_PRIVATE bool _saudio_backend_init(void) {
     fmt.wBitsPerSample = 16;
     fmt.nBlockAlign = (fmt.nChannels * fmt.wBitsPerSample) / 8;
     fmt.nAvgBytesPerSec = fmt.nSamplesPerSec * fmt.nBlockAlign;
-    REFERENCE_TIME dur = (REFERENCE_TIME)
+    dur = (REFERENCE_TIME)
         (((double)_saudio.buffer_frames) / (((double)_saudio.sample_rate) * (1.0/10000000.0)));
     if (FAILED(IAudioClient_Initialize(_saudio.backend.audio_client,
         AUDCLNT_SHAREMODE_SHARED,