diff --git a/tools/robot_custom_rules.py b/tools/robot_custom_rules.py
index 2b1c14c..d953783 100755
--- a/tools/robot_custom_rules.py
+++ b/tools/robot_custom_rules.py
@@ -17,6 +17,7 @@
     table section if it is a section of comments.
     e.g "*** Comments ***"
     """
+
     severity = ERROR
 
     def apply(self, suite):