--- a/mercurial/cmdutil.py	Sun Apr 13 19:01:00 2014 +0200
+++ b/mercurial/cmdutil.py	Sun Apr 13 19:01:00 2014 +0200
@@ -2258,7 +2258,7 @@
     This is an independent function to let extension to plug in and react to
     the imminent revert.
 
-    Make sure you have the working directory locked when caling this function.
+    Make sure you have the working directory locked when calling this function.
     """
     parent, p2 = parents
     node = ctx.node()