diff --git a/hassio/api/__init__.py b/hassio/api/__init__.py
index 4ba2c1dae..73527d010 100644
--- a/hassio/api/__init__.py
+++ b/hassio/api/__init__.py
@@ -100,7 +100,7 @@ class RestAPI(object):
     def register_panel(self):
         """Register panel for homeassistant."""
         panel = Path(__file__).parents[1].joinpath('panel/hassio-main.html')
-        
+
         def get_panel(request):
             """Return file response with panel."""
             return web.FileResponse(panel)