diff --git a/thefuck/utils.py b/thefuck/utils.py
index 8d55f372..f4c7246c 100644
--- a/thefuck/utils.py
+++ b/thefuck/utils.py
@@ -181,7 +181,7 @@ def is_app(command, *app_names, **kwargs):
 
 
 def for_app(*app_names, **kwargs):
-    """Specifies that matching script is for on of app names."""
+    """Specifies that matching script is for one of app names."""
     def _for_app(fn, command):
         if is_app(command, *app_names, **kwargs):
             return fn(command)