--- a/hgext/mq.py
+++ b/hgext/mq.py
@@ -502,7 +502,7 @@ class queue:
         if opts.get('rev'):
             if not self.applied:
                 raise util.Abort(_('no patches applied'))
-            revs = [int(r) for r in cmdutil.revrange(ui, repo, opts['rev'])]
+            revs = cmdutil.revrange(ui, repo, opts['rev'])
             if len(revs) > 1 and revs[0] > revs[1]:
                 revs.reverse()
             for rev in revs:
@@ -1015,9 +1015,9 @@ class queue:
                     del mm[mm.index(x)]
                 dd.append(x)
 
-            m = list(util.unique(mm))
-            r = list(util.unique(dd))
-            a = list(util.unique(aa))
+            m = util.unique(mm)
+            r = util.unique(dd)
+            a = util.unique(aa)
             filelist = filter(matchfn, util.unique(m + r + a))
             if opts.get('git'):
                 self.diffopts().git = True
@@ -1276,7 +1276,7 @@ class queue:
             if files:
                 raise util.Abort(_('option "-r" not valid when importing '
                                    'files'))
-            rev = [int(r) for r in cmdutil.revrange(self.ui, repo, rev)]
+            rev = cmdutil.revrange(self.ui, repo, rev)
             rev.sort(lambda x, y: cmp(y, x))
         if (len(files) > 1 or len(rev) > 1) and patchname:
             raise util.Abort(_('option "-n" not valid when importing multiple '