diff --git a/sendfile.cabal b/sendfile.cabal
--- a/sendfile.cabal
+++ b/sendfile.cabal
@@ -1,5 +1,5 @@
 name:          sendfile
-version:       0.6.1
+version:       0.6.2
 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.
@@ -9,7 +9,7 @@
 license:       BSD3
 license-file:  LICENSE
 author:        Matthew Elder <matt@mattelder.org>
-maintainer:    Matthew Elder <matt@mattelder.org>
+maintainer:    Jeremy Shaw <jeremy@n-heptane.com>
 homepage:      http://patch-tag.com/r/mae/sendfile
 category:      Network
 build-type:    Simple
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
@@ -51,7 +51,7 @@
             if errno == eAGAIN
               -- is it correct to reduce bytes by nsent here?
               then let nremaining = max 0 (bytes - (fromIntegral nsent))
-                   in sendfile out_fd in_fd pbytes off nremaining (ctr + (fromIntegral nsent))
+                   in sendfile out_fd in_fd pbytes (off + nsent) nremaining (ctr + (fromIntegral nsent))
               else throwErrno "Network.Socket.SendFile.Darwin"
 
 -- max num of bytes in one send