diff --git a/tests/test_tags.py b/tests/test_tags.py
index e115b3e3d..993b81430 100644
--- a/tests/test_tags.py
+++ b/tests/test_tags.py
@@ -4,14 +4,12 @@ from fastapi import APIRouter, FastAPI
 
 def test_string_is_invalid_in_router_tags():
     with pytest.raises(AssertionError):
-        router = APIRouter(tags="test")
-
+        APIRouter(tags="test")
 
 def test_string_is_invalid_in_router_route_tags():
     router = APIRouter()
 
     with pytest.raises(AssertionError):
-
         @router.get("", tags="test")
         def test():
             ...
@@ -26,4 +24,4 @@ def test_string_is_invalid_in_include_router_tags():
         ...
 
     with pytest.raises(AssertionError):
-        app.include_router(router, prefix="/test", tags="test")
+        app.include_router(router, prefix="/test", tags="test")
\ No newline at end of file