diff -r 70c1cc354a8f -r 47a3f39bead0 tests/tools/check_source.sh
--- a/tests/tools/check_source.sh	Mon Oct 09 16:04:39 2017 +0300
+++ b/tests/tools/check_source.sh	Mon Oct 09 18:13:26 2017 +0300
@@ -222,8 +222,7 @@
     enable=$enable,W0611          # (unused-import) Unused import X
     enable=$enable,C1001          # (old-style-class) Old-style class defined. Problem with PyJS
     enable=$enable,W0102          # (dangerous-default-value) Dangerous default value {} as argument
-
-    # enable=$enable,W0403        # relative import
+    enable=$enable,W0403          # (relative-import) Relative import 'Y', should be 'X.Y'
     # enable=
 
     options=