diff --git a/app/__init__.py b/app/__init__.py
index f1ed64ab3..4d5113f46 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -183,6 +183,7 @@ def _csp(config):
             csp["connect-src"].append(ws_url)
     return csp
 
+
 def create_app(application):
     @application.after_request
     def add_csp_header(response):