diff --git a/divinespark-backend/src/main/java/com/divinespark/utils/ValidationUtil.java b/divinespark-backend/src/main/java/com/divinespark/utils/ValidationUtil.java
index 5905d68..e23d581 100644
--- a/divinespark-backend/src/main/java/com/divinespark/utils/ValidationUtil.java
+++ b/divinespark-backend/src/main/java/com/divinespark/utils/ValidationUtil.java
@@ -9,7 +9,7 @@ public static boolean isBlank(String s) {
     public static boolean isValidWhatsAppGroupLink(String link) {
         if (isBlank(link)) return false;
 
-        String l = link.trim().toLowerCase();
+        String l = link.trim().toLowerCase(); //
         // WhatsApp group invite links usually look like:
         // https://chat.whatsapp.com/<code>
         // https://www.whatsapp.com/invite/<code>