diff --git a/Yesod/Internal/Core.hs b/Yesod/Internal/Core.hs
index 842e0008..3fa63128 100644
--- a/Yesod/Internal/Core.hs
+++ b/Yesod/Internal/Core.hs
@@ -206,11 +206,11 @@ class RenderRoute (Route a) => Yesod a where
     -- | Join the pieces of a path together into an absolute URL. This should
     -- be the inverse of 'splitPath'.
     joinPath :: a
-             -> Builder -- ^ application root
+             -> TS.Text -- ^ application root
              -> [TS.Text] -- ^ path pieces
              -> [(TS.Text, TS.Text)] -- ^ query string
              -> Builder
-    joinPath _ ar pieces' qs' = ar `mappend` encodePath pieces qs
+    joinPath _ ar pieces' qs' = fromText ar `mappend` encodePath pieces qs
       where
         pieces = if null pieces' then [""] else pieces'
         qs = map (TE.encodeUtf8 *** go) qs'
@@ -569,7 +569,7 @@ yesodRender :: Yesod y
 yesodRender y u qs =
     TE.decodeUtf8 $ toByteString $
     fromMaybe
-        (joinPath y (fromText $ approot y) ps
+        (joinPath y (approot y) ps
           $ qs ++ qs')
         (urlRenderOverride y u)
   where
diff --git a/Yesod/Internal/Dispatch.hs b/Yesod/Internal/Dispatch.hs
index 32a60fc1..48664bb0 100644
--- a/Yesod/Internal/Dispatch.hs
+++ b/Yesod/Internal/Dispatch.hs
@@ -23,8 +23,6 @@ import Network.HTTP.Types (status301)
 import Data.Text (Text)
 import Data.Monoid (mappend)
 import qualified Blaze.ByteString.Builder
-import qualified Blaze.ByteString.Builder.Char8
-import Blaze.ByteString.Builder.Char.Utf8 (fromText)
 import qualified Data.ByteString.Char8 as S8
 
 {-|
@@ -87,7 +85,7 @@ sendRedirect y segments' env =
             , ("Location", Blaze.ByteString.Builder.toByteString dest')
             ] "Redirecting"
   where
-    dest = joinPath y (fromText $ approot y) segments' []
+    dest = joinPath y (approot y) segments' []
     dest' =
         if S.null (W.rawQueryString env)
             then dest