diff -r c507c363625e -r 646245c1c0d9 tests/tools/check_source.sh
--- a/tests/tools/check_source.sh	Fri Sep 29 16:26:15 2017 +0300
+++ b/tests/tools/check_source.sh	Fri Sep 29 16:39:52 2017 +0300
@@ -211,6 +211,7 @@
     enable=$enable,C0321          # (multiple-statements) More than one statement on a single line
     enable=$enable,W0231          # (super-init-not-called) __init__ method from base class is not called
     enable=$enable,W0105          # (pointless-string-statement) String statement has no effect    
+    enable=$enable,W0311          # (bad-indentation) Bad indentation. Found 16 spaces, expected 12
 
     # enable=$enable,W0403        # relative import
     # enable=$enable,W0622        # (redefined-builtin) Redefining built-in