diff --git a/yesod-core/Yesod/Message.hs b/yesod-core/Yesod/Message.hs
index a37781ad..49db5015 100644
--- a/yesod-core/Yesod/Message.hs
+++ b/yesod-core/Yesod/Message.hs
@@ -2,10 +2,12 @@
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE TypeSynonymInstances #-}
+{-# LANGUAGE ExistentialQuantification #-}
 module Yesod.Message
     ( mkMessage
     , RenderMessage (..)
     , ToMessage (..)
+    , SomeMessage (..)
     ) where
 
 import Language.Haskell.TH.Syntax
@@ -248,3 +250,5 @@ parseVar s =
     case break (== '@') s of
         (x, '@':y) -> (x, Just y)
         _ -> (s, Nothing)
+
+data SomeMessage master = forall msg. RenderMessage master msg => SomeMessage msg
diff --git a/yesod-form/Yesod/Form/Fields.hs b/yesod-form/Yesod/Form/Fields.hs
index 971d75a2..1e24754c 100644
--- a/yesod-form/Yesod/Form/Fields.hs
+++ b/yesod-form/Yesod/Form/Fields.hs
@@ -30,7 +30,7 @@ module Yesod.Form.Fields
 
 import Yesod.Form.Types
 import Yesod.Widget
-import Yesod.Message (RenderMessage)
+import Yesod.Message (RenderMessage, SomeMessage (..))
 import Text.Hamlet
 import Text.Blaze (ToHtml (..), preEscapedString, unsafeByteString)
 import Text.Cassius
diff --git a/yesod-form/Yesod/Form/Functions.hs b/yesod-form/Yesod/Form/Functions.hs
index 9a901108..90d3e6b7 100644
--- a/yesod-form/Yesod/Form/Functions.hs
+++ b/yesod-form/Yesod/Form/Functions.hs
@@ -41,7 +41,7 @@ import Control.Monad.Trans.Class (lift)
 import Control.Monad (liftM, join)
 import Text.Blaze (Html, toHtml)
 import Yesod.Handler (GHandler, GGHandler, getRequest, runRequestBody, newIdent, getYesod)
-import Yesod.Core (RenderMessage, liftIOHandler)
+import Yesod.Core (RenderMessage, liftIOHandler, SomeMessage (..))
 import Yesod.Widget (GWidget, whamlet)
 import Yesod.Request (reqNonce, reqWaiRequest, reqGetParams, languages)
 import Network.Wai (requestMethod)
diff --git a/yesod-form/Yesod/Form/Input.hs b/yesod-form/Yesod/Form/Input.hs
index 65c679a1..45c742c4 100644
--- a/yesod-form/Yesod/Form/Input.hs
+++ b/yesod-form/Yesod/Form/Input.hs
@@ -15,7 +15,7 @@ import Control.Applicative (Applicative (..))
 import Yesod.Handler (GHandler, GGHandler, invalidArgs, runRequestBody, getRequest, getYesod, liftIOHandler)
 import Yesod.Request (reqGetParams, languages)
 import Control.Monad (liftM)
-import Yesod.Message (RenderMessage (..))
+import Yesod.Message (RenderMessage (..), SomeMessage (..))
 import qualified Data.Map as Map
 import Data.Maybe (fromMaybe)
 
diff --git a/yesod-form/Yesod/Form/Jquery.hs b/yesod-form/Yesod/Form/Jquery.hs
index c830da08..66fe67a3 100644
--- a/yesod-form/Yesod/Form/Jquery.hs
+++ b/yesod-form/Yesod/Form/Jquery.hs
@@ -27,7 +27,7 @@ import Text.Julius (julius)
 import Control.Monad.Trans.Class (lift)
 import Data.Text (Text, pack, unpack)
 import Data.Monoid (mconcat)
-import Yesod.Core (RenderMessage)
+import Yesod.Core (RenderMessage, SomeMessage (..))
 
 #if __GLASGOW_HASKELL__ >= 700
 #define HTML html
diff --git a/yesod-form/Yesod/Form/Types.hs b/yesod-form/Yesod/Form/Types.hs
index 48f623fc..f5f87345 100644
--- a/yesod-form/Yesod/Form/Types.hs
+++ b/yesod-form/Yesod/Form/Types.hs
@@ -12,7 +12,6 @@ module Yesod.Form.Types
     , Form
     , AForm (..)
       -- * Build forms
-    , SomeMessage (..)
     , Field (..)
     , FieldSettings (..)
     , FieldView (..)
@@ -26,7 +25,7 @@ import Text.Blaze (Html, ToHtml (toHtml))
 import Control.Applicative ((<$>), Applicative (..))
 import Control.Monad (liftM)
 import Data.String (IsString (..))
-import Yesod.Core (RenderMessage, GGHandler, GWidget)
+import Yesod.Core (GGHandler, GWidget, SomeMessage)
 import qualified Data.Map as Map
 
 -- | A form can produce three different results: there was no data available,
@@ -113,8 +112,6 @@ data FieldView sub master = FieldView
     , fvRequired :: Bool
     }
 
-data SomeMessage master = forall msg. RenderMessage master msg => SomeMessage msg
-
 data Field sub master a = Field
     { fieldParse :: [Text] -> GGHandler sub master IO (Either (SomeMessage master) (Maybe a))
     -- | ID, name, (invalid text OR legimiate result), required?