diff --git a/Azure.hs b/Azure.hs
--- a/Azure.hs
+++ b/Azure.hs
@@ -258,7 +258,7 @@
         let headers = ("x-ms-version", "2011-08-18")
                     : ("x-ms-date", now)
                     : extraHeaders ++ requestHeaders initReq
-        let getHeader hdr = listToMaybe $ map snd $ filter (\(a,b) -> a == hdr) headers
+        let getHeader hdr = listToMaybe $ map snd $ filter (\(a,_) -> a == hdr) headers
         let signData = defaultSignData { verb = reqType
                                        , contentLength = if reqType `elem` ["PUT", "DELETE"] || not (B.null reqBody) then B8.pack $ show $ B.length reqBody else ""
                                        , canonicalizedHeaders = canonicalizeHeaders headers
@@ -284,9 +284,6 @@
 
 encodeParams :: [(B.ByteString, B.ByteString)] -> B.ByteString
 encodeParams = renderQuery True . simpleQueryToQuery
-
-liftToString :: (String -> String) -> B8.ByteString -> B8.ByteString
-liftToString f = B8.pack . f . B8.unpack
 
 canonicalizeHeaders :: [Header] -> B.ByteString
 canonicalizeHeaders headers = B.intercalate "\n" unfoldHeaders
diff --git a/Azure/BlobDataTypes.hs b/Azure/BlobDataTypes.hs
--- a/Azure/BlobDataTypes.hs
+++ b/Azure/BlobDataTypes.hs
@@ -3,7 +3,6 @@
 import qualified Data.ByteString as B
 import Data.Text (Text)
 import Data.Default
-import System.FilePath (FilePath)
 
 data AccessControl = ContainerPublic -- ^ the container can be enumerated and all blobs can be read by anonymous users
                    | BlobPublic      -- ^ blobs can be read by anonymous users, but the container cannot be enumerated
diff --git a/azurify.cabal b/azurify.cabal
--- a/azurify.cabal
+++ b/azurify.cabal
@@ -1,5 +1,5 @@
 name:                azurify
-version:             0.4.0.2
+version:             0.4.0.3
 synopsis:            A simple library for accessing Azure blob storage
 description:         An interface for a few basic functions of the Microsoft Azure blob storage. Creating and deleting containers as well as uploading, downloading and breaking leases of blobs is supported.
 homepage:            http://arnovanlumig.com/azure
@@ -60,7 +60,6 @@
     case-insensitive >= 0.4.0.1,
     utf8-string >= 0.3.7,
     old-locale >= 1.0.0.4,
-    filepath,
     unix-compat
 
   if !flag(no-hxt)
@@ -101,7 +100,6 @@
     utf8-string >= 0.3.7,
     cmdargs >= 0.10,
     directory >= 1.1.0.2,
-    filepath,
     unix-compat
 
   if !flag(no-hxt)