diff --git a/src/modules/whatsapp/whatsapp.service.ts b/src/modules/whatsapp/whatsapp.service.ts
index b16dfdc..04ddc70 100644
--- a/src/modules/whatsapp/whatsapp.service.ts
+++ b/src/modules/whatsapp/whatsapp.service.ts
@@ -226,7 +226,7 @@ export class WhatsappService {
       chatId: from,
       fromMe: false,
       type: message.type ?? 'text',
-      body: messageBody || null,
+      body: messageBody || undefined,
       senderName: contactName,
       timestamp,
     });