diff --git a/src/window/audio.c b/src/window/audio.c
index 2c6eaae..b3f0265 100644
--- a/src/window/audio.c
+++ b/src/window/audio.c
@@ -187,7 +187,7 @@ audiodata audio_wav_load(audiodevice const* dev, char const* fpath) {
 
     // calculate the time in milliseconds of the audio fragment
     // by dividing the audio bytelength by the format's bitsize, by the audio device's channels and the audio device's frequency
-    audio.ms = (((1000 * audio.len) / (SDL_AUDIO_BITSIZE(dev->fmt) / 8)) / spec.channels / dev->freq);
+    audio.ms = (((1000 * audio.len) / (SDL_AUDIO_BITSIZE(dev->fmt) / 8)) / dev->channels / dev->freq);
 
     return audio;
 }