diff --git a/offlineimap/head/offlineimap/ui/UIBase.py b/offlineimap/head/offlineimap/ui/UIBase.py
index fbf6149..3c04c8a 100644
--- a/offlineimap/head/offlineimap/ui/UIBase.py
+++ b/offlineimap/head/offlineimap/ui/UIBase.py
@@ -28,7 +28,7 @@ class UIBase:
     ################################################## UTILS
     def _msg(s, msg):
         """Generic tool called when no other works."""
-        raise NotImplementedException
+        raise NotImplementedError
 
     def warn(s, msg):
         s._msg("WARNING: " + msg)
@@ -47,7 +47,7 @@ class UIBase:
     ################################################## INPUT
 
     def getpass(s, accountname, config):
-        raise NotImplementedException
+        raise NotImplementedError
 
     def folderlist(s, list):
         return ', '.join(["%s[%s]" % (s.getnicename(x), x.getname()) for x in list])