diff --git a/productMods/WEB-INF/web.xml b/productMods/WEB-INF/web.xml
index 4f3b4539..1ea1af8c 100644
--- a/productMods/WEB-INF/web.xml
+++ b/productMods/WEB-INF/web.xml
@@ -163,6 +163,7 @@
     <listener-class> edu.cornell.mannlib.vivo.auth.policy.SelfEditorRelationshipPolicy$Setup</listener-class>
   </listener>
 
+  <!-- The Solr index uses a "public" filter, so the PropertyRestrictionPolicyHelper must already be set up. -->
   <listener>
     <listener-class>
       edu.cornell.mannlib.vitro.webapp.search.solr.SolrSetup