--- a/tests/tools/check_source.sh	Tue Oct 02 16:53:14 2018 +0300
+++ b/tests/tools/check_source.sh	Tue Oct 02 17:18:09 2018 +0300
@@ -304,6 +304,7 @@
     enable=$enable,W0403          # (relative-import) Relative import 'Y', should be 'X.Y '
     enable=$enable,W0612          # (unused-variable) Unused variable 'X'
     enable=$enable,C0330          # (bad-continuation) Wrong hanging indentation before block
+    enable=$enable,R0123          # (literal-comparison) Comparison to literal
     # enable=
 
     options=