diff --git a/tests/test_router_circular_import.py b/tests/test_router_circular_import.py
index a1c1d4c8d0..d2ac71b29e 100644
--- a/tests/test_router_circular_import.py
+++ b/tests/test_router_circular_import.py
@@ -1,5 +1,6 @@
 import pytest
-from fastapi import FastAPI, APIRouter
+from fastapi import APIRouter, FastAPI
+
 
 def test_router_circular_import():
     app = FastAPI()
@@ -7,4 +8,4 @@ def test_router_circular_import():
 
     app.include_router(router)
     with pytest.raises(AssertionError, match="Router cannot be the same as parent"):
-        router.include_router(router)
\ No newline at end of file
+        router.include_router(router)