diff --git a/backend/src/State/RoomsState.hs b/backend/src/State/RoomsState.hs
index 1649aeb..fab907b 100644
--- a/backend/src/State/RoomsState.hs
+++ b/backend/src/State/RoomsState.hs
@@ -65,7 +65,7 @@ roomStateDiffInOpenRooms newData = do
   liftIO $ putStrLn $ pack $ "Current rooms: " ++ show current
   liftIO $ putStrLn $ pack $ "New rooms: " ++ show newData
   let newRooms = filter roomNotEmpty $ filter (\newRoom -> isNothing $ find (sameName newRoom) (filter roomNotEmpty current)) newData
-  let oldRooms = filter roomNotEmpty $ filter (\oldRoom -> isNothing $ find (sameName oldRoom) newData) current
+  let oldRooms = filter (\oldRoom -> isNothing $ find (sameName oldRoom) newData) current
 
   return (newRooms, oldRooms)