diff --git a/ruleset.xml b/ruleset.xml
index 65dbf7d..4f3dcf6 100644
--- a/ruleset.xml
+++ b/ruleset.xml
@@ -540,6 +540,7 @@
     <!-- Squiz -->
     <rule ref="Squiz.Scope.MemberVarScope"/>
     <rule ref="Squiz.Scope.MethodScope"/>
+    <rule ref="Squiz.Scope.StaticThisUsage"/>
 
     <!--
         ***********************************************************************