diff --git a/productMods/WEB-INF/web.xml b/productMods/WEB-INF/web.xml
index d4870e20..1647dfe6 100644
--- a/productMods/WEB-INF/web.xml
+++ b/productMods/WEB-INF/web.xml
@@ -173,6 +173,10 @@
     </listener-class>
   </listener>
   
+  <listener>
+    <listener-class>edu.cornell.mannlib.vitro.webapp.dao.jena.VClassGroupCache</listener-class>
+   </listener>
+   
   <!--
     <listener>
         <listener-class>