diff --git a/chapter7/dfs_dirtrav.py b/chapter7/dfs_dirtrav.py
index 0860519..0bc3344 100644
--- a/chapter7/dfs_dirtrav.py
+++ b/chapter7/dfs_dirtrav.py
@@ -1,5 +1,4 @@
 import logging
-from collections import deque
 from pathlib import Path
 
 logging.basicConfig(level=logging.DEBUG)