diff --git a/pywhispercpp/model.py b/pywhispercpp/model.py
index be73b94..8742bba 100644
--- a/pywhispercpp/model.py
+++ b/pywhispercpp/model.py
@@ -273,7 +273,7 @@ def _load_audio(media_file_path: str) -> np.array:
         sound = AudioSegment.from_file(media_file_path)
         sound = sound.set_frame_rate(constants.WHISPER_SAMPLE_RATE).set_channels(1)
         arr = np.array(sound.get_array_of_samples()).T.astype(np.float32)
-        arr /= np.iinfo(samples[0].typecode).max
+        arr /= np.iinfo(np.int16).max
         return arr
 
     def __del__(self):