diff --git a/fastapi/applications.py b/fastapi/applications.py
index 582e9765c..443045375 100644
--- a/fastapi/applications.py
+++ b/fastapi/applications.py
@@ -519,7 +519,7 @@ class FastAPI(Starlette):
                 """
                 **Attention**: This parameter is deprecated.
 
-                The recommended approach for managing startup and shutdown 
+                The recommended approach for managing startup and shutdown
                 is by utilizing the lifespan parameter within the FastAPI app.
                 """
             ),
@@ -540,7 +540,7 @@ class FastAPI(Starlette):
                 """
                 **Attention**: This parameter is deprecated.
 
-                The recommended approach for managing startup and shutdown 
+                The recommended approach for managing startup and shutdown
                 is by utilizing the lifespan parameter within the FastAPI app.
                 """
             ),
diff --git a/fastapi/routing.py b/fastapi/routing.py
index 2082ab0ab..b42f7b9b3 100644
--- a/fastapi/routing.py
+++ b/fastapi/routing.py
@@ -694,7 +694,7 @@ class APIRouter(routing.Router):
                 """
                 **Attention**: This parameter is deprecated.
 
-                The recommended approach for managing startup and shutdown 
+                The recommended approach for managing startup and shutdown
                 is by utilizing the lifespan parameter within the APIRouter.
                 """
             ),
@@ -715,7 +715,7 @@ class APIRouter(routing.Router):
                 """
                 **Attention**: This parameter is deprecated.
 
-                The recommended approach for managing startup and shutdown 
+                The recommended approach for managing startup and shutdown
                 is by utilizing the lifespan parameter within the APIRouter.
                 """
             ),