--- a/mercurial/commands.py	Fri Mar 29 18:45:07 2013 -0700
+++ b/mercurial/commands.py	Mon Apr 01 18:48:12 2013 -0300
@@ -2108,7 +2108,7 @@
 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