diff --git a/servant-client/servant-client.cabal b/servant-client/servant-client.cabal
index c908be71..e7b16f39 100644
--- a/servant-client/servant-client.cabal
+++ b/servant-client/servant-client.cabal
@@ -33,6 +33,7 @@ library
       base >=4.7 && <5
     , aeson
     , attoparsec
+    , base64-bytestring
     , bytestring
     , exceptions
     , http-client
@@ -65,7 +66,6 @@ test-suite spec
     , transformers
     , transformers-compat
     , aeson
-    , base64-bytestring
     , bytestring
     , deepseq
     , hspec == 2.*
diff --git a/servant-client/src/Servant/Client/Authentication.hs b/servant-client/src/Servant/Client/Authentication.hs
index 1d7d43d9..083fb0ed 100644
--- a/servant-client/src/Servant/Client/Authentication.hs
+++ b/servant-client/src/Servant/Client/Authentication.hs
@@ -1,12 +1,25 @@
+{-# LANGUAGE OverloadedStrings #-}
+
 -- | Authentication for clients
 
 module Servant.Client.Authentication (
     AuthenticateRequest ( authReq )
     ) where
 
-import Servant.Common.Req (Req)
+import Data.ByteString.Base64  (encode)
+import Data.Monoid ((<>))
+import Data.Text.Encoding (decodeUtf8)
+import Servant.API.Authentication (BasicAuth(BasicAuth))
+import Servant.Common.Req (addHeader, Req)
 
 -- | Class to represent the ability to authenticate a 'Request'
 -- object. For example, we may add special headers to the 'Request'.
 class AuthenticateRequest a where
     authReq :: a -> Req -> Req
+     
+
+instance AuthenticateRequest (BasicAuth realm) where
+    authReq (BasicAuth user pass) req =
+        let authText = decodeUtf8 ("Basic " <> encode (user <> ":" <> pass)) in
+            addHeader "Authorization" authText req
+
diff --git a/servant-client/test/Servant/ClientSpec.hs b/servant-client/test/Servant/ClientSpec.hs
index 2b291fe3..50387e43 100644
--- a/servant-client/test/Servant/ClientSpec.hs
+++ b/servant-client/test/Servant/ClientSpec.hs
@@ -20,14 +20,12 @@ import           Control.Concurrent
 import           Control.Exception
 import           Control.Monad.Trans.Except
 import           Data.Aeson
-import qualified Data.ByteString.Base64     as B64
 import           Data.ByteString.Lazy       (ByteString)
 import           Data.Char
 import           Data.Foldable              (forM_)
 import           Data.Monoid
 import           Data.Proxy
 import qualified Data.Text                  as T
-import qualified Data.Text.Encoding         as TE
 import           GHC.Generics
 import qualified Network.HTTP.Client        as C
 import           Network.HTTP.Media
@@ -44,8 +42,7 @@ import           Test.QuickCheck
 import           Servant.API
 import           Servant.API.Authentication
 import           Servant.Client
-import qualified Servant.Common.Req         as SCR
-import           Servant.Client.Authentication (AuthenticateRequest(authReq))
+import           Servant.Client.Authentication()
 import           Servant.Server
 import           Servant.Server.Internal.Authentication
 
@@ -113,11 +110,6 @@ basicAuthCheck (BasicAuth user pass) = if user == "servant" && pass == "server"
                                        then return (Just $ Person "servant" 17)
                                        else return Nothing
 
-instance AuthenticateRequest (BasicAuth realm) where
-    authReq (BasicAuth user pass) req =
-        let authText = TE.decodeUtf8 ("Basic " <> B64.encode (user <> ":" <> pass)) in
-            SCR.addHeader "Authorization" authText req
-
 api :: Proxy Api
 api = Proxy