diff --git a/Network/C10kServer.hs b/Network/C10kServer.hs
--- a/Network/C10kServer.hs
+++ b/Network/C10kServer.hs
@@ -29,7 +29,7 @@
 import Control.Concurrent
 import Control.Exception
 import Control.Monad
-import IO hiding (catch, try)
+import System.IO
 import Network.BSD
 import Network.Socket
 import Prelude hiding (catch)
@@ -128,7 +128,7 @@
 stay :: (Socket -> Dispatch) -> C10kConfig -> IO ()
 stay sDispatch cnf = do
     parentStartedHook cnf `catch` ignore
-    s <- listenOn addr port
+    s <- listenTo addr port
     writePidFile cnf
     setGroupUser cnf
     runServer (sDispatch s) cnf
@@ -153,7 +153,7 @@
     pause = awaitSignal Nothing >> yield
     initHandler func sig = installHandler sig func Nothing
     ignoreSigChild = initHandler Ignore sigCHLD
-    terminator cids sig = initHandler (Catch (terminateChildren cids)) sig
+    terminator cids = initHandler (Catch (terminateChildren cids))
     terminateChildren cids = do
         ignoreSigChild
         mapM_ terminateChild cids
@@ -163,7 +163,7 @@
 
 doPrefork :: (Socket -> Dispatch) -> C10kConfig -> IO [ProcessID]
 doPrefork sDispatch cnf = do
-    s <- listenOn addr port
+    s <- listenTo addr port
     writePidFile cnf
     setGroupUser cnf
     cids <- fork (sDispatch s)
@@ -238,8 +238,8 @@
 
 ----------------------------------------------------------------
 
-listenOn :: Maybe HostName -> ServiceName -> IO Socket
-listenOn maddr serv = do
+listenTo :: Maybe HostName -> ServiceName -> IO Socket
+listenTo maddr serv = do
     proto <- getProtocolNumber "tcp"
     let hints = defaultHints {
             addrFlags = [ AI_ADDRCONFIG, AI_NUMERICHOST
diff --git a/c10k.cabal b/c10k.cabal
--- a/c10k.cabal
+++ b/c10k.cabal
@@ -1,5 +1,5 @@
 Name:                   c10k
-Version:                0.4.0
+Version:                0.4.1
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3
@@ -25,7 +25,7 @@
     GHC-Options:        -Wall -O2
   Exposed-Modules:      Network.C10kServer
                         Network.TCPInfo
-  Build-Depends:        base >= 4 && < 5, haskell98, network, unix, hdaemonize
+  Build-Depends:        base >= 4 && < 5, haskell98, network, unix
 Source-Repository head
   Type:                 git
   Location:             git://github.com/kazu-yamamoto/c10k.git