diff --git a/hassio/api/__init__.py b/hassio/api/__init__.py
index 00acc71ad..02a40665b 100644
--- a/hassio/api/__init__.py
+++ b/hassio/api/__init__.py
@@ -100,8 +100,12 @@ class RestAPI(object):
     def register_panel(self):
         """Register panel for homeassistant."""
         panel = Path(__file__).parents[1].joinpath('panel/hassio-main.html')
+        
+        def get_panel():
+            """Return file response with panel."""
+            return web.FileResponse(panel)
 
-        self.webapp.router.add_get('/panel', web.FileResponse(panel))
+        self.webapp.router.add_get('/panel', get_panel)
 
     async def start(self):
         """Run rest api webserver."""