diff --git a/api/controllers/console/tag/tags.py b/api/controllers/console/tag/tags.py
index 108fa88d05..472232899a 100644
--- a/api/controllers/console/tag/tags.py
+++ b/api/controllers/console/tag/tags.py
@@ -12,9 +12,6 @@ from fields.tag_fields import dataset_tag_fields
 from libs.login import current_account_with_tenant, login_required
 from services.tag_service import TagService
 
-DEFAULT_REF_TEMPLATE_SWAGGER_2_0 = "#/definitions/{model}"
-
-
 class TagBasePayload(BaseModel):
     name: str = Field(description="Tag name", min_length=1, max_length=50)
     type: Literal["knowledge", "app"] | None = Field(default=None, description="Tag type")