diff --git a/stft.py b/stft.py
index edfc44ae8..4b979ec87 100644
--- a/stft.py
+++ b/stft.py
@@ -64,7 +64,7 @@ def __init__(self, filter_length=800, hop_length=200, win_length=800,
             assert(filter_length >= win_length)
             # get window and zero center pad it to filter_length
             fft_window = get_window(window, win_length, fftbins=True)
-            fft_window = pad_center(fft_window, filter_length)
+            fft_window = pad_center(fft_window, size=filter_length)
             fft_window = torch.from_numpy(fft_window).float()
 
             # window the bases