diff -r 2e5acbded4a1 -r 80b225e9a6b6 tests/tools/check_source.sh
--- a/tests/tools/check_source.sh	Fri Oct 12 11:35:15 2018 +0300
+++ b/tests/tools/check_source.sh	Fri Oct 12 11:50:40 2018 +0300
@@ -373,6 +373,7 @@
     enable=$enable,W1624          # (indexing-exception) Indexing exceptions will not work on Python 3
     enable=$enable,W1625          # (raising-string) Raising a string exception
     enable=$enable,W1622          # (next-method-called) Called a next() method on an object
+    enable=$enable,W1653          # (next-method-defined) next method defined
     # enable=
 
     options=