diff --git a/src/flask/app.py b/src/flask/app.py
index f6c6e9c5..a53572dd 100644
--- a/src/flask/app.py
+++ b/src/flask/app.py
@@ -523,8 +523,8 @@ class Flask(Scaffold):
            # Note we do this without checking if static_folder exists.
            # For one, it might be created while the server is running (e.g. during
            # development). Also, Google App Engine stores static files somewhere"""
-        
-        
+
+
         if self.has_static_folder:
             assert (
                 bool(static_host) == host_matching