diff --git a/src/backend/bisheng/database/models/audit_log.py b/src/backend/bisheng/database/models/audit_log.py
index 7cfbda92c..822072a07 100644
--- a/src/backend/bisheng/database/models/audit_log.py
+++ b/src/backend/bisheng/database/models/audit_log.py
@@ -63,7 +63,7 @@ class AuditLogBase(SQLModelSerializable):
     event_type: Optional[str] = Field(index=True, description="操作行为")
     object_type: Optional[str] = Field(index=True, description="操作对象类型")
     object_id: Optional[int] = Field(index=True, description="操作对象ID")
-    object_name: Optional[str] = Field(description="操作对象名称")
+    object_name: Optional[str] = Field(sa_column=Column(Text), description="操作对象名称")
     note: Optional[str] = Field(sa_column=Column(Text), description="操作备注")
     ip_address: Optional[str] = Field(index=True, description="操作时客户端的IP地址")
     create_time: Optional[datetime] = Field(sa_column=Column(