1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/ftplib.py b/Lib/ftplib.py
index 7c5a50715f..dc9a8afbd8 100644
--- a/Lib/ftplib.py
+++ b/Lib/ftplib.py
@@ -561,7 +561,7 @@ class FTP:
         LIST command.  (This *should* only be used for a pathname.)'''
         cmd = 'LIST'
         func = None
-        if args[-1:] and type(args[-1]) != type(''):
+        if args[-1:] and not isinstance(args[-1], str):
             args, func = args[:-1], args[-1]
         for arg in args:
             if arg: