diff --git a/src/core/helpers.ts b/src/core/helpers.ts
index fd886435..d8b70f63 100644
--- a/src/core/helpers.ts
+++ b/src/core/helpers.ts
@@ -1,20 +1,23 @@
-export function toVcard(data): string {
+import { Contact, VCardContact } from '@waha/structures/chatting.dto';
+
+export function toVcard(data: Contact | VCardContact): string {
   if (data.vcard) {
     return data.vcard;
   }
+  const contact: Contact = data as any;
   const parts = [];
   parts.push('BEGIN:VCARD');
   parts.push('VERSION:3.0');
-  parts.push(`FN:${data.fullName}`);
-  if (data.organization) {
-    parts.push(`ORG:${data.organization};`);
+  parts.push(`FN:${contact.fullName}`);
+  if (contact.organization) {
+    parts.push(`ORG:${contact.organization};`);
   }
-  if (data.whatsappId) {
+  if (contact.whatsappId) {
     parts.push(
-      `TEL;type=CELL;type=VOICE;waid=${data.whatsappId}:${data.phoneNumber}`,
+      `TEL;type=CELL;type=VOICE;waid=${contact.whatsappId}:${contact.phoneNumber}`,
     );
   } else {
-    parts.push(`TEL;type=CELL;type=VOICE:${data.phoneNumber}`);
+    parts.push(`TEL;type=CELL;type=VOICE:${contact.phoneNumber}`);
   }
   parts.push('END:VCARD');
   return parts.join('\n');