diff --git a/build/code-sniffer-ruleset-tests.xml b/build/code-sniffer-ruleset-tests.xml
index 17f00d1d..8767eee9 100644
--- a/build/code-sniffer-ruleset-tests.xml
+++ b/build/code-sniffer-ruleset-tests.xml
@@ -11,7 +11,7 @@
        using underscore. -->
   <exclude name="PSR1.Classes.ClassDeclaration.MissingNamespace" />
   <exclude name="Squiz.Classes.ValidClassName.NotCamelCaps" />
-  <exclude name="PSR1.Classes.ClassDeclaration.MultipleClasses" />
+  <exclude name="PSR1.Files.SideEffects.FoundWithSymbols" />
  </rule>
 
 </ruleset>