diff --git a/puren_tonbo/tools/ptig.py b/puren_tonbo/tools/ptig.py
index 790dfe2..a17ac7c 100755
--- a/puren_tonbo/tools/ptig.py
+++ b/puren_tonbo/tools/ptig.py
@@ -171,6 +171,7 @@ def do_ls(self, line=None):
             print('%s/' % x)
         for x in file_list:
             print('%s' % x)
+    do_dir = do_ls
 
     def do_bookmarks(self, line=None):
         """Bookmark result (filenames), for use with `results` command