diff --git a/utils/audio.py b/utils/audio.py
index 31c065ff..5b5b5059 100644
--- a/utils/audio.py
+++ b/utils/audio.py
@@ -68,6 +68,7 @@ class AudioProcessor(object):
             self.hop_length = hop_length
             self.win_length = win_length
         assert min_level_db != 0.0, " [!] min_level_db is 0"
+        assert self.win_length <= self.fft_size, " [!] win_length cannot be larger than fft_size"
         members = vars(self)
         for key, value in members.items():
             print(" | > {}:{}".format(key, value))