diff --git a/web/pages/all_rooms.py b/web/pages/all_rooms.py
index 97f1e1a..cbe8cfd 100644
--- a/web/pages/all_rooms.py
+++ b/web/pages/all_rooms.py
@@ -18,7 +18,7 @@ async def page():
         await asyncio.sleep(1)
         ui.navigate.to("/contents")
 
-    portrait = is_portrait()
+    portrait = await is_portrait()
 
     await draw_header()