diff --git a/server/services/baileys/manager.ts b/server/services/baileys/manager.ts
index a83e18c..50c1905 100644
--- a/server/services/baileys/manager.ts
+++ b/server/services/baileys/manager.ts
@@ -159,9 +159,11 @@ class BaileysManager extends EventEmitter {
         syncFullHistory: true,
         markOnlineOnConnect: false,
         // Sync history messages from the last 30 days
+        // IMPORTANTE: Si no hay messageTimestamp, retornar true para permitir el check inicial de Baileys
         shouldSyncHistoryMessage: (msg) => {
+          if (!msg.messageTimestamp) return true
           const thirtyDaysAgo = Date.now() / 1000 - (30 * 24 * 60 * 60)
-          return msg.messageTimestamp! >= thirtyDaysAgo
+          return msg.messageTimestamp >= thirtyDaysAgo
         },
         // getMessage for resending/decrypting messages
         getMessage: async (key) => {