diff --git a/sendfile.cabal b/sendfile.cabal
--- a/sendfile.cabal
+++ b/sendfile.cabal
@@ -1,5 +1,5 @@
 name:          sendfile
-version:       0.7.11.3
+version:       0.7.11.4
 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/Win32.hsc b/src/Network/Socket/SendFile/Win32.hsc
--- a/src/Network/Socket/SendFile/Win32.hsc
+++ b/src/Network/Socket/SendFile/Win32.hsc
@@ -6,7 +6,7 @@
 import Foreign.C.Error (throwErrnoIf)
 import Foreign.C.Types (CInt(..))
 import Foreign.Marshal.Alloc (alloca)
-import Foreign.Ptr (IntPtr, Ptr, intPtrToPtr, nullPtr)
+import Foreign.Ptr (IntPtr(..), Ptr, intPtrToPtr, nullPtr)
 import Foreign.Storable (peek)
 import Network.Socket.SendFile.Iter (Iter(..),runIter)
 import System.Posix.Types (Fd(..))