--- a/mercurial/wireprotov2server.py	Sun Aug 18 00:45:33 2019 +0300
+++ b/mercurial/wireprotov2server.py	Sun Aug 18 02:28:42 2019 +0300
@@ -28,9 +28,11 @@
     wireprotoframing,
     wireprototypes,
 )
+from .interfaces import (
+    util as interfaceutil,
+)
 from .utils import (
     cborutil,
-    interfaceutil,
     stringutil,
 )