diff --git a/Yesod/Helpers/Auth/OAuth.hs b/Yesod/Helpers/Auth/OAuth.hs
--- a/Yesod/Helpers/Auth/OAuth.hs
+++ b/Yesod/Helpers/Auth/OAuth.hs
@@ -12,6 +12,7 @@
 import qualified Network.OAuth.Http.Request as OA
 import Network.OAuth.Http.CurlHttpClient
 import Data.Maybe
+import Data.String
 
 oauthUrl :: String -> AuthRoute
 oauthUrl name = PluginR name ["forward"]
@@ -34,8 +35,8 @@
         let app = Application key sec (URL $ render $ tm url)
         tok <- runOAuthM (fromApplication app) $ do
           signRq2 HMACSHA1 Nothing (fromJust . parseURL $ reqUrl) >>= oauthRequest CurlClient
-        let oaUrl = concat
-                    [authUrl
+        let oaUrl = fromString $ concat
+                    [ authUrl
                     , "?oauth_token="
                     , findWithDefault ("oauth_token", "ERR") $ oauthParams tok
                     ]
@@ -56,7 +57,7 @@
         setCreds True creds
     dispatch _ _ = notFound
     login tm = do
-        render <- liftHandler getUrlRender
+        render <- lift getUrlRender
         let oaUrl = render $ tm $ oauthUrl name
         addHtml
 #if GHC7
@@ -64,7 +65,7 @@
 #else
           [$hamlet|
 #endif
-             %a!href=$oaUrl$ Login with $name$
+             <a>!href=$oaUrl$ Login with $name$
           |]
 
 authTwitter :: YesodAuth m =>
diff --git a/yesod-auth-oauth.cabal b/yesod-auth-oauth.cabal
--- a/yesod-auth-oauth.cabal
+++ b/yesod-auth-oauth.cabal
@@ -7,7 +7,7 @@
 -- The package version. See the Haskell package versioning policy
 -- (http://www.haskell.org/haskellwiki/Package_versioning_policy) for
 -- standards guiding when and how versions should be incremented.
-Version:             0.2
+Version:             0.3
 
 -- A short (one-line) description of the package.
 Synopsis:            OAuth wrapper for yesod-auth
@@ -48,8 +48,8 @@
   Exposed-modules:     Yesod.Helpers.Auth.OAuth
   
   -- Packages needed in order to build this package.
-  Build-depends: base >= 4 && < 5, hoauth >= 0.3 && <0.4, yesod-auth >= 0.2 && < 0.3,
-                 yesod >= 0.6 && < 0.7
+  Build-depends: base >= 4 && < 5, hoauth >= 0.3 && <0.4, yesod-auth >= 0.3 && < 0.4,
+                 yesod >= 0.7 && < 0.8
   
   -- Modules not exported by this package.
   -- Other-modules: