diff --git a/egs/yesno/ASR/tdnn/train.py b/egs/yesno/ASR/tdnn/train.py
index ae5fe0235..e476e8beb 100755
--- a/egs/yesno/ASR/tdnn/train.py
+++ b/egs/yesno/ASR/tdnn/train.py
@@ -2,7 +2,6 @@
 
 import argparse
 import logging
-import collections
 from pathlib import Path
 from shutil import copyfile
 from typing import Optional, Tuple, List