diff --git a/telegram-application/src/core/database/tg_messages.py b/telegram-application/src/core/database/tg_messages.py
index 1622b7a..78811f7 100644
--- a/telegram-application/src/core/database/tg_messages.py
+++ b/telegram-application/src/core/database/tg_messages.py
@@ -2,7 +2,7 @@ from datetime import datetime
 from typing import TYPE_CHECKING
 from uuid import UUID
 
-from sqlalchemy import ForeignKey
+from sqlalchemy import ForeignKey, UniqueConstraint
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 from src.core.database import Base
@@ -31,3 +31,7 @@ class TgMessage(Base):
     user_relationship: Mapped["User"] = relationship(
         backref="message_relationship"
     )
+
+    __table_args__ = (
+        UniqueConstraint('chat_id', 'id', name='_chat_id_message_unq'),
+    )