--- a/mercurial/commands.py	Thu Mar 28 18:27:19 2013 -0700
+++ b/mercurial/commands.py	Tue Apr 02 08:58:42 2013 -0700
@@ -2095,7 +2095,7 @@
 def debugobsolete(ui, repo, precursor=None, *successors, **opts):
     """create arbitrary obsolete marker
 
-    With no arguments it it display the list obsolescence marker."""
+    With no arguments, displays the list of obsolescence markers."""
     def parsenodeid(s):
         try:
             # We do not use revsingle/revrange functions here to accept