diff --git a/sendfile.cabal b/sendfile.cabal
--- a/sendfile.cabal
+++ b/sendfile.cabal
@@ -1,5 +1,5 @@
 name:          sendfile
-version:       0.7.7
+version:       0.7.8
 stability:     provisional
 synopsis:      A portable sendfile library
 description:   A library which exposes zero-copy sendfile functionality in a portable way. If a platform does not support sendfile, a fallback implementation in haskell is provided.
diff --git a/src/Network/Socket/SendFile/Darwin.hsc b/src/Network/Socket/SendFile/Darwin.hsc
--- a/src/Network/Socket/SendFile/Darwin.hsc
+++ b/src/Network/Socket/SendFile/Darwin.hsc
@@ -4,16 +4,16 @@
 
 import Data.Int (Int64)
 import Foreign.C.Error (eAGAIN, eINTR, getErrno, throwErrno)
-import Foreign.C.Types (CInt)
+import Foreign.C.Types (CInt(..))
 import Foreign.Marshal (alloca)
 import Foreign.Ptr (Ptr, nullPtr)
 import Foreign.Storable (peek, poke)
 import Network.Socket.SendFile.Iter (Iter(..), runIter)
-import System.Posix.Types (Fd)
+import System.Posix.Types (Fd(..))
 #include <stdio.h>
 
 _sendFile :: Fd -> Fd -> Int64 -> Int64 -> IO ()
-_sendFile out_fd in_fd off count = 
+_sendFile out_fd in_fd off count =
     do _ <- runIter (sendFileIter out_fd in_fd count off count) -- set blockSize == count. ie. send it all if we can.
        return ()
 
@@ -58,7 +58,7 @@
 
 -- NOTE: should we retry automatically on EINTR (but not EAGAIN)
 sendfileI :: Fd -> Fd -> Int64 -> Ptr Int64 -> IO (Bool, Int64)
-sendfileI out_fd in_fd off len = 
+sendfileI out_fd in_fd off len =
     do status <- c_sendfile out_fd in_fd off len
        if (status == 0)
           then do nsent <- peek len
diff --git a/src/Network/Socket/SendFile/Win32.hsc b/src/Network/Socket/SendFile/Win32.hsc
--- a/src/Network/Socket/SendFile/Win32.hsc
+++ b/src/Network/Socket/SendFile/Win32.hsc
@@ -4,12 +4,12 @@
 import Data.Bits ((.|.))
 import Data.Int
 import Foreign.C.Error (throwErrnoIf)
-import Foreign.C.Types (CInt)
+import Foreign.C.Types (CInt(..))
 import Foreign.Marshal.Alloc (alloca)
 import Foreign.Ptr (IntPtr, Ptr, intPtrToPtr, nullPtr)
 import Foreign.Storable (peek)
 import Network.Socket.SendFile.Iter (Iter(..),runIter)
-import System.Posix.Types (Fd)
+import System.Posix.Types (Fd(..))
 import System.Win32.Types (DWORD, HANDLE, failIfZero)
 
 #include <windows.h>