diff --git a/plugins/IntelliLang/xml-support/resources/xmlInjections.xml b/plugins/IntelliLang/xml-support/resources/xmlInjections.xml
index f411b6c80a7c..31ec992c8137 100644
--- a/plugins/IntelliLang/xml-support/resources/xmlInjections.xml
+++ b/plugins/IntelliLang/xml-support/resources/xmlInjections.xml
@@ -16,7 +16,7 @@
   </injection>
   <injection language="JavaScript" injector-id="xml">
     <display-name>*/@on.*</display-name>
-    <place><![CDATA[xmlAttribute().withLocalName(string().matches("on.*")).withParent(xmlTag().withNamespace(string().equalTo("http://www.w3.org/1999/xhtml")))]]></place>
+    <place><![CDATA[xmlAttribute().withLocalName(string().startsWith("on")).withParent(xmlTag().withNamespace(string().equalTo("http://www.w3.org/1999/xhtml")))]]></place>
   </injection>
   <injection language="CSS" injector-id="xml">
     <display-name>*/@style</display-name>