diff --git a/Lib/ftplib.py b/Lib/ftplib.py
index fd5a863..8dce9ac 100644
--- a/Lib/ftplib.py
+++ b/Lib/ftplib.py
@@ -100,7 +100,7 @@
     file = None
     welcome = None
     passiveserver = 1
-    encoding = "latin1"
+    encoding = "latin-1"
 
     # Initialization method (called by class instantiation).
     # Initialize host to localhost, port to standard ftp port