diff --git a/thefuck/rules/sudo.py b/thefuck/rules/sudo.py
index 1a87ffec..31687549 100644
--- a/thefuck/rules/sudo.py
+++ b/thefuck/rules/sudo.py
@@ -13,7 +13,8 @@ patterns = ['permission denied',
             'must be root',
             'need to be root',
             'need root',
-            'only root can do that']
+            'only root can do that',
+            'authentication is required']
 
 
 def match(command, settings):