diff --git a/hgext/mq.py b/hgext/mq.py
--- a/hgext/mq.py
+++ b/hgext/mq.py
@@ -94,6 +94,7 @@ from mercurial import (
     smartset,
     subrepo,
     util,
+    vfs as vfsmod,
 )
 
 release = lockmod.release
@@ -434,7 +435,7 @@ class queue(object):
         except IOError:
             curpath = os.path.join(path, 'patches')
         self.path = patchdir or curpath
-        self.opener = scmutil.vfs(self.path)
+        self.opener = vfsmod.vfs(self.path)
         self.ui = ui
         self.baseui = baseui
         self.applieddirty = False