diff --git a/requests/status_codes.py b/requests/status_codes.py
index de384865..8992a372 100644
--- a/requests/status_codes.py
+++ b/requests/status_codes.py
@@ -18,7 +18,7 @@ _codes = {
     205: ('reset_content', 'reset'),
     206: ('partial_content', 'partial'),
     207: ('multi_status', 'multiple_status', 'multi_stati', 'multiple_stati'),
-    208: ('im_used',),
+    226: ('im_used',),
 
     # Redirection.
     300: ('multiple_choices',),