diff --git a/yesod-core/Yesod/Core/Json.hs b/yesod-core/Yesod/Core/Json.hs
index 42f26777..d4e3eaa8 100644
--- a/yesod-core/Yesod/Core/Json.hs
+++ b/yesod-core/Yesod/Core/Json.hs
@@ -1,5 +1,4 @@
 {-# LANGUAGE TypeSynonymInstances, OverloadedStrings #-}
-{-# LANGUAGE CPP #-}
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 module Yesod.Core.Json
     ( -- * Convert from a JSON value
@@ -90,11 +89,6 @@ parseJsonBody_ = do
         J.Error s -> invalidArgs [pack s]
         J.Success a -> return a
 
-#if !MIN_VERSION_shakespeare_js(1, 0, 2)
-instance ToJavascript J.Value where
-    toJavascript = fromLazyText . decodeUtf8 . JE.encode
-#endif
-
 -- | Convert a list of pairs to an 'J.Object'.
 object :: J.ToJSON a => [(Text, a)] -> J.Value
 object = J.object . map (second J.toJSON)