--- a/Tools__HierarchicalLintRuleList.st	Fri Feb 23 04:04:07 2018 +0100
+++ b/Tools__HierarchicalLintRuleList.st	Sat Feb 24 13:14:43 2018 +0100
@@ -1,3 +1,5 @@
+"{ Encoding: utf8 }"
+
 "
  Copyright (c) 2007-2010 Jan Vrany, SWING Research Group, Czech Technical University in Prague
  Copyright (c) 2009-2010 eXept Software AG
@@ -166,6 +168,10 @@
 updateList
     |inGenerator filterS inRules root|
 
+    RBCompositeLintRule isNil ifTrue:[
+        ^ self.
+    ].
+
     inGenerator := self inGeneratorHolder value.
     filterS := self filterHolder value.
     filterS notEmptyOrNil ifTrue:[