diff --git a/httpdocs/js/pages/recipients-endpoints.js b/httpdocs/js/pages/recipients-endpoints.js
index 3c4ffd7e63..aef66b1ce9 100644
--- a/httpdocs/js/pages/recipients-endpoints.js
+++ b/httpdocs/js/pages/recipients-endpoints.js
@@ -196,7 +196,7 @@ $(document).ready(function () {
 
                     if (!recipient.endpoint_conf) return;
 
-                    const isBuiltin = recipient.endpoint_conf.builtin || false;
+                    const isBuiltin = (recipient.endpoint_conf && recipient.endpoint_conf.builtin) || false;
                     if (isBuiltin) return;
 
                     return DataTableUtils.createActionButtons([