diff --git a/Data/Digest/Pure/MD5.hs b/Data/Digest/Pure/MD5.hs
--- a/Data/Digest/Pure/MD5.hs
+++ b/Data/Digest/Pure/MD5.hs
@@ -92,7 +92,8 @@
 h3 = 0x10325476
 
 -- | Processes a lazy ByteString and returns the md5 digest.
---   This is probably what you want.
+--   This is probably what you want. You can use 'show' to produce the standard hex
+-- representation.
 md5 :: L.ByteString -> MD5Digest
 md5 = hash
 
@@ -140,7 +141,15 @@
 {-# INLINE performMD5Update #-}
 
 isAligned :: ByteString -> Bool
+#if !MIN_VERSION_bytestring(0,11,0)
 isAligned (PS _ off _) = off `rem` 4 == 0
+#else
+isAligned = const True
+-- This is semantically equivalent to the definition above, because
+-- in bytestring-0.11 offset is always 0. Note that neither definition checks
+-- that a pointer (the first field of 'PS') is aligned. Anyways 'isAligned'
+-- is used for optimization purposes only and does not affect correctness.
+#endif
 
 applyMD5Rounds :: MD5Partial -> ByteString -> MD5Partial
 applyMD5Rounds (MD5Par a b c d) w = {-# SCC "applyMD5Rounds" #-}
@@ -259,7 +268,7 @@
 -- | The raw bytes of an 'MD5Digest'. It is always 16 bytes long.
 --
 -- You can also use the 'Binary' or 'S.Serialize' instances to output the raw
--- bytes. Alternatively you can use 'show' to prodce the standard hex
+-- bytes. Alternatively you can use 'show' to produce the standard hex
 -- representation.
 --
 md5DigestBytes :: MD5Digest -> B.ByteString
diff --git a/Test/MD5.hs b/Test/MD5.hs
deleted file mode 100644
--- a/Test/MD5.hs
+++ /dev/null
@@ -1,8 +0,0 @@
-{-# LANGUAGE ExistentialQuantification #-}
-module Test.MD5 where
-
-import Test.QuickCheck
-import Test.Crypto
-import Data.Digest.Pure.MD5
-
-test = runTests (makeMD5Tests (undefined :: MD5Digest))
diff --git a/pureMD5.cabal b/pureMD5.cabal
--- a/pureMD5.cabal
+++ b/pureMD5.cabal
@@ -1,5 +1,5 @@
 name:		pureMD5
-version:	2.1.3
+version:	2.1.4
 license:	BSD3
 license-file:	LICENSE
 author:		Thomas DuBuisson <thomas.dubuisson@gmail.com>
@@ -12,7 +12,6 @@
 build-type:	Simple
 cabal-version:	>= 1.10
 tested-with:	GHC == 7.10.3
-extra-source-files: Test/MD5.hs
 
 flag test
   description: Build a test program