diff --git a/prisma/postgresql-migrations/20250228130127_add_unique_chat/migration.sql b/prisma/postgresql-migrations/20250228130127_add_unique_chat/migration.sql
new file mode 100644
index 00000000..077b6929
--- /dev/null
+++ b/prisma/postgresql-migrations/20250228130127_add_unique_chat/migration.sql
@@ -0,0 +1,8 @@
+/*
+  Warnings:
+
+  - A unique constraint covering the columns `[instanceId,remoteJid]` on the table `Chat` will be added. If there are existing duplicate values, this will fail.
+
+*/
+-- CreateIndex
+CREATE UNIQUE INDEX "Chat_instanceId_remoteJid_key" ON "Chat"("instanceId", "remoteJid");
diff --git a/prisma/postgresql-schema.prisma b/prisma/postgresql-schema.prisma
index a9782ce5..090d4620 100644
--- a/prisma/postgresql-schema.prisma
+++ b/prisma/postgresql-schema.prisma
@@ -125,6 +125,8 @@ model Chat {
   Instance       Instance  @relation(fields: [instanceId], references: [id], onDelete: Cascade)
   instanceId     String
   unreadMessages Int       @default(0)
+
+  @@unique([instanceId, remoteJid])
   @@index([instanceId])
   @@index([remoteJid])
 }
diff --git a/src/api/services/channel.service.ts b/src/api/services/channel.service.ts
index 0f30f0c9..cf03fc3e 100644
--- a/src/api/services/channel.service.ts
+++ b/src/api/services/channel.service.ts
@@ -702,6 +702,7 @@ export class ChannelStartupService {
             ) as "updatedAt",
             "Chat"."createdAt" as "windowStart",
             "Chat"."createdAt" + INTERVAL '24 hours' as "windowExpires",
+            "Chat"."labels" as "labels",
             CASE 
               WHEN "Chat"."createdAt" + INTERVAL '24 hours' > NOW() THEN true 
               ELSE false 
@@ -764,6 +765,7 @@ export class ChannelStartupService {
           windowExpires: contact.windowExpires,
           windowActive: contact.windowActive,
           lastMessage: lastMessage ? this.cleanMessageData(lastMessage) : undefined,
+          labels: contact.labels,
         };
       });