diff -r d265efad02cc -r ac47c2f774a8 hgext/evolve.py
--- a/hgext/evolve.py	Fri Aug 08 23:15:43 2014 -0700
+++ b/hgext/evolve.py	Mon Aug 11 01:57:09 2014 +0530
@@ -852,7 +852,7 @@
     if not orig.p2().rev() == node.nullrev:
         raise util.Abort(
             'no support for evolving merge changesets yet',
-            hint="Redo the merge a use `hg prune` to obsolete the old one")
+            hint="Redo the merge and use `hg prune` to obsolete the old one")
     destbookmarks = repo.nodebookmarks(dest.node())
     nodesrc = orig.node()
     destphase = repo[nodesrc].phase()