diff -r 8f6641fa7c89 -r 25c543944bc0 hgext/mq.py
--- a/hgext/mq.py	Wed Nov 29 04:41:19 2017 +0530
+++ b/hgext/mq.py	Wed Nov 29 04:47:27 2017 +0530
@@ -565,7 +565,7 @@
                 return index
         return None
 
-    guard_re = re.compile(r'\s?#([-+][^-+# \t\r\n\f][^# \t\r\n\f]*)')
+    guard_re = re.compile(br'\s?#([-+][^-+# \t\r\n\f][^# \t\r\n\f]*)')
 
     def parseseries(self):
         self.series = []