diff --git a/Database/MongoDB/Internal/Connection.hs b/Database/MongoDB/Internal/Connection.hs
index ddb23f8..d921941 100644
--- a/Database/MongoDB/Internal/Connection.hs
+++ b/Database/MongoDB/Internal/Connection.hs
@@ -5,7 +5,6 @@
 module Database.MongoDB.Internal.Connection (
     Connection(..),
     readExactly,
-    writeLazy,
     fromHandle,
 ) where
 
@@ -52,9 +51,6 @@ readExactly conn count = go mempty count
   eof = mkIOError eofErrorType "Database.MongoDB.Internal.Connection"
                   Nothing Nothing
 
-writeLazy :: Connection -> Lazy.ByteString -> IO ()
-writeLazy conn = mapM_ (write conn) . Lazy.ByteString.toChunks
-
 fromHandle :: Handle -> IO Connection
 -- ^ Make connection form handle
 fromHandle handle = do