--- a/contrib/check-config.py	Mon Feb 05 13:12:36 2018 +0530
+++ b/contrib/check-config.py	Fri Dec 29 05:40:49 2017 +0530
@@ -49,7 +49,7 @@
         confsect = ''
         carryover = ''
         linenum = 0
-        for l in open(f):
+        for l in open(f, 'rb'):
             linenum += 1
 
             # check topic-like bits