diff --git a/Utility/WinProcess.hs b/Utility/WinProcess.hs
index cfac8794c4..31f6cfc693 100644
--- a/Utility/WinProcess.hs
+++ b/Utility/WinProcess.hs
@@ -11,5 +11,18 @@ module Utility.WinProcess where
 
 import Utility.PID
 
-foreign import ccall unsafe "winprocess.h terminatepid"
-	terminatePID :: PID -> IO ()
+import System.Win32.Process
+import Control.Exception (bracket)
+import Control.Monad
+
+terminatePID :: PID -> IO ()
+terminatePID p = bracket 
+	(openProcess pROCESS_TERMINATE False p)
+	(void . c_closeProcess)
+	(\h -> void $ c_TerminateProcess h 1)
+
+foreign import ccall unsafe "windows.h TerminateProcess"
+	c_TerminateProcess :: ProcessHandle -> Int -> IO Int
+
+foreign import ccall unsafe "windows.h CloseHandle"
+	c_closeProcess :: ProcessHandle -> IO Bool
diff --git a/Utility/winprocess.c b/Utility/winprocess.c
deleted file mode 100644
index b6e3155739..0000000000
--- a/Utility/winprocess.c
+++ /dev/null
@@ -1,10 +0,0 @@
-#include <windows.h>
-
-void terminatepid (DWORD pid) {
-	HANDLE h;
-	h = OpenProcess(PROCESS_TERMINATE, 0, pid);
-	if (h != NULL) {
-		TerminateProcess(h, 1);
-	}
-	CloseHandle(h);
-}
diff --git a/Utility/winprocess.h b/Utility/winprocess.h
deleted file mode 100644
index eac954fcae..0000000000
--- a/Utility/winprocess.h
+++ /dev/null
@@ -1,3 +0,0 @@
-#include <windows.h>
-
-void terminatepid (DWORD pid);
diff --git a/git-annex.cabal b/git-annex.cabal
index 780d66a1ea..4115b5ba6a 100644
--- a/git-annex.cabal
+++ b/git-annex.cabal
@@ -1062,8 +1062,6 @@ Executable git-annex
       Utility.LockFile.Windows
       Utility.LockPool.Windows
       Utility.WinProcess
-    C-Sources: Utility/winprocess.c
-    Includes: Utility/winprocess.h
   else
     Other-Modules:
       Utility.LockFile.Posix