diff --git a/backend/src/main/groovy/edu/internet2/tier/shibboleth/admin/ui/service/JPAMetadataResolverServiceImpl.groovy b/backend/src/main/groovy/edu/internet2/tier/shibboleth/admin/ui/service/JPAMetadataResolverServiceImpl.groovy
index ef50962b0..b34a5b2c6 100644
--- a/backend/src/main/groovy/edu/internet2/tier/shibboleth/admin/ui/service/JPAMetadataResolverServiceImpl.groovy
+++ b/backend/src/main/groovy/edu/internet2/tier/shibboleth/admin/ui/service/JPAMetadataResolverServiceImpl.groovy
@@ -277,7 +277,7 @@ class JPAMetadataResolverServiceImpl implements MetadataResolverService {
     private String generateJavaScriptRegexScript(String regex) {
         return """
     "use strict";
-    ${regex}.test(input.getEntityID());\n"""
+    ${regex.startsWith('/') ? '' : '/'}${regex}${regex.endsWith('/') ? '' : '/'}.test(input.getEntityID());\n"""
     }
 
     void constructXmlNodeForFilter(EntityRoleWhiteListFilter filter, def markupBuilderDelegate) {