--- a/contrib/check-code.py	Fri May 20 09:47:35 2016 +0900
+++ b/contrib/check-code.py	Fri May 20 09:47:35 2016 +0900
@@ -474,7 +474,6 @@
         filters = c[3]
         for i, flt in enumerate(filters):
             filters[i] = re.compile(flt[0]), flt[1]
-_preparepats()
 
 class norepeatlogger(object):
     def __init__(self):
@@ -644,6 +643,8 @@
     else:
         check = args
 
+    _preparepats()
+
     ret = 0
     for f in check:
         if not checkfile(f, maxerr=options.per_file, warnings=options.warnings,