--- a/mercurial/commands.py	Fri Apr 21 15:04:32 2017 +0530
+++ b/mercurial/commands.py	Mon Apr 24 04:32:04 2017 +0530
@@ -4618,8 +4618,8 @@
     if not ui.configbool('ui', 'rollback', True):
         raise error.Abort(_('rollback is disabled because it is unsafe'),
                           hint=('see `hg help -v rollback` for information'))
-    return repo.rollback(dryrun=opts.get('dry_run'),
-                         force=opts.get('force'))
+    return repo.rollback(dryrun=opts.get(r'dry_run'),
+                         force=opts.get(r'force'))
 
 @command('root', [])
 def root(ui, repo):