diff --git a/mighttpd2.cabal b/mighttpd2.cabal
--- a/mighttpd2.cabal
+++ b/mighttpd2.cabal
@@ -1,5 +1,5 @@
 Name:                   mighttpd2
-Version:                2.8.8
+Version:                2.8.9
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3
diff --git a/src/Net.hs b/src/Net.hs
--- a/src/Net.hs
+++ b/src/Net.hs
@@ -1,7 +1,7 @@
 module Net (listenSocket) where
 
 import Control.Exception
-import Network
+import qualified Network as N
 import Network.BSD
 import Network.Socket
 
@@ -25,4 +25,4 @@
     return sock
  where
    setup = socket (addrFamily addr) (addrSocketType addr) (addrProtocol addr)
-   cleanup = sClose
+   cleanup = N.sClose