diff --git a/Yesod/Dispatch.hs b/Yesod/Dispatch.hs
index 0b26ba5c..5571db19 100644
--- a/Yesod/Dispatch.hs
+++ b/Yesod/Dispatch.hs
@@ -79,7 +79,7 @@ import Yesod.Content
 mkYesod :: String -- ^ name of the argument datatype
         -> [Resource]
         -> Q [Dec]
-mkYesod name = fmap (\(x, y) -> x ++ y) . mkYesodGeneral name [] [] False
+mkYesod name = fmap (uncurry (++)) . mkYesodGeneral name [] [] False
 
 -- | Generates URL datatype and site function for the given 'Resource's. This
 -- is used for creating subsites, *not* sites. See 'mkYesod' for the latter.
@@ -91,7 +91,7 @@ mkYesodSub :: String -- ^ name of the argument datatype
            -> [Resource]
            -> Q [Dec]
 mkYesodSub name clazzes =
-    fmap (\(x, y) -> x ++ y) . mkYesodGeneral name' rest clazzes True
+    fmap (uncurry (++)) . mkYesodGeneral name' rest clazzes True
   where
     (name':rest) = words name
 
@@ -134,7 +134,7 @@ mkYesodGeneral :: String -- ^ argument name
 mkYesodGeneral name args clazzes isSub res = do
     let name' = mkName name
         args' = map mkName args
-        arg = foldl AppT (ConT $ name') $ map VarT args'
+        arg = foldl AppT (ConT name') $ map VarT args'
     let site = mkName $ "site" ++ name
     let gsbod = NormalB $ VarE site
     let yes' = FunD (mkName "getSite") [Clause [] gsbod []]
diff --git a/Yesod/Formable.hs b/Yesod/Formable.hs
index d44b9ebd..0e0b8416 100644
--- a/Yesod/Formable.hs
+++ b/Yesod/Formable.hs
@@ -24,10 +24,9 @@ module Yesod.Formable
 import Text.Hamlet
 import Data.Time (Day)
 import Control.Applicative
-import Database.Persist (Persistable)
+import Database.Persist (Persistable, Table (..))
 import Data.Char (isAlphaNum, toUpper, isUpper)
 import Language.Haskell.TH.Syntax
-import Database.Persist (Table (..))
 import Control.Monad (liftM)
 import Control.Arrow (first)
 import Data.Maybe (fromMaybe, isJust)
@@ -134,7 +133,7 @@ wrapperRow label errs control = [$hamlet|
                     %li $string.err$
 |]
 
-instance Formable [Char] where
+instance Formable String where
     formable = input' go
       where
         go name val = [$hamlet|
diff --git a/Yesod/Handler.hs b/Yesod/Handler.hs
index c93234cc..edbaee7a 100644
--- a/Yesod/Handler.hs
+++ b/Yesod/Handler.hs
@@ -269,7 +269,7 @@ redirectParams rt url params = do
         | c == ' ' = "+"
         | otherwise = '%' : myShowHex (ord c) ""
     myShowHex :: Int -> ShowS
-    myShowHex n r =  case showIntAtBase 16 (toChrHex) n r of
+    myShowHex n r =  case showIntAtBase 16 toChrHex n r of
         []  -> "00"
         [c] -> ['0',c]
         s  -> s
diff --git a/Yesod/Helpers/Crud.hs b/Yesod/Helpers/Crud.hs
index 505f0bc2..21224b1a 100644
--- a/Yesod/Helpers/Crud.hs
+++ b/Yesod/Helpers/Crud.hs
@@ -155,7 +155,7 @@ crudHelper title me isPost = do
 
 defaultCrud :: (Persist i (YesodDB a (GHandler (Crud a i) a)), YesodPersist a)
             => a -> Crud a i
-defaultCrud = const $ Crud
+defaultCrud = const Crud
     { crudSelect = runDB $ select [] []
     , crudReplace = \a -> runDB . replace a
     , crudInsert = runDB . insert
diff --git a/Yesod/Json.hs b/Yesod/Json.hs
index 026819d2..310f3a93 100644
--- a/Yesod/Json.hs
+++ b/Yesod/Json.hs
@@ -95,7 +95,7 @@ jsonList (x:xs) = mconcat
     , Json $ preEscapedString "]"
     ]
   where
-    go j = mappend (Json $ preEscapedString ",") j
+    go = mappend (Json $ preEscapedString ",")
 
 -- | Outputs a JSON map, eg {\"foo\":\"bar\",\"baz\":\"bin\"}.
 jsonMap :: [(String, Json)] -> Json