diff -r f681c3f2eeba -r 27eb5abd5058 gameServer/OfficialServer/checker.hs
--- a/gameServer/OfficialServer/checker.hs	Tue Jul 07 00:17:05 2020 +0200
+++ b/gameServer/OfficialServer/checker.hs	Wed Jul 08 17:02:45 2020 +0300
@@ -28,8 +28,7 @@
 import Control.Monad.State
 import Control.Concurrent.Chan
 import Control.Concurrent
-import Network
-import Network.BSD
+import Network.BSD hiding (recv)
 import Network.Socket hiding (recv, sClose)
 import Network.Socket.ByteString
 import qualified Data.ByteString.Char8 as B
@@ -207,7 +206,7 @@
 
     Exception.bracket
         setupConnection
-        (\s -> noticeM "Core" "Shutting down" >> sClose s)
+        (\s -> noticeM "Core" "Shutting down" >> close s)
         (session login password (d ++ "/.hedgewars") exeFullname dataPrefix)
     where
         setupConnection = do