--- a/hgext/evolve.py	Thu Jun 18 17:08:11 2015 -0700
+++ b/hgext/evolve.py	Thu Jun 18 17:08:38 2015 -0700
@@ -504,8 +504,9 @@
     Obsolete changesets with non-obsolete descendants.
     """
     revset.getargs(x, 0, 0, 'suspended takes no arguments')
-    suspended = getrevs(repo, 'suspended')
-    return [r for r in subset if r in suspended]
+    suspended = revset.baseset(getrevs(repo, 'suspended'))
+    suspended.sort()
+    return subset & suspended
 
 
 @eh.revset('precursors')