diff --git a/database/models.py b/database/models.py
index ff5fa0d..4bbe2cf 100644
--- a/database/models.py
+++ b/database/models.py
@@ -64,7 +64,7 @@ class CategoryGroup(SQLModel, table=True):
             nullable=False,
         )
     )
-    message_id: int = Field(sa_column=Column("MessageId", BIGINT(unsigned=True)))
+    message_id: int | None = Field(sa_column=Column("MessageId", BIGINT(unsigned=True)), default=None)
     pad_length: int = Field(default=12, sa_column=Column("PadLength", SMALLINT(unsigned=True)))
     username_length: int = Field(default=12, sa_column=Column("UsernameLength", SMALLINT(unsigned=True)))