diff --git a/Data/GraphQL/AST.hs b/Data/GraphQL/AST.hs
index 1303908..2703a5b 100644
--- a/Data/GraphQL/AST.hs
+++ b/Data/GraphQL/AST.hs
@@ -68,14 +68,12 @@ data Value = ValueVariable Variable
            -- GraphQL Float is double precison
            | ValueFloat Double
            | ValueBoolean Bool
-           | ValueString StringValue
+           | ValueString Text
            | ValueEnum Name
            | ValueList ListValue
            | ValueObject ObjectValue
              deriving (Eq,Show)
 
-newtype StringValue = StringValue Text deriving (Eq,Show)
-
 newtype ListValue = ListValue [Value] deriving (Eq,Show)
 
 newtype ObjectValue = ObjectValue [ObjectField] deriving (Eq,Show)
diff --git a/Data/GraphQL/Encoder.hs b/Data/GraphQL/Encoder.hs
index 9eed849..2b7e239 100644
--- a/Data/GraphQL/Encoder.hs
+++ b/Data/GraphQL/Encoder.hs
@@ -106,8 +106,8 @@ booleanValue True  = "true"
 booleanValue False = "false"
 
 -- TODO: Escape characters
-stringValue :: StringValue -> Text
-stringValue (StringValue v) = quotes v
+stringValue :: Text -> Text
+stringValue = quotes
 
 listValue :: ListValue -> Text
 listValue (ListValue vs) = bracketsCommas value vs
diff --git a/Data/GraphQL/Execute.hs b/Data/GraphQL/Execute.hs
index 8d0335d..47d1d03 100644
--- a/Data/GraphQL/Execute.hs
+++ b/Data/GraphQL/Execute.hs
@@ -37,5 +37,5 @@ substitute _ sel = sel
 -- TODO: Support different value types
 subsArg :: Schema.Subs -> Argument -> Maybe Argument
 subsArg subs (Argument n (ValueVariable (Variable v))) =
-    Argument n . ValueString . StringValue <$> subs v
+    Argument n . ValueString <$> subs v
 subsArg _ arg = Just arg
diff --git a/Data/GraphQL/Parser.hs b/Data/GraphQL/Parser.hs
index 1f5b8e6..6658af0 100644
--- a/Data/GraphQL/Parser.hs
+++ b/Data/GraphQL/Parser.hs
@@ -169,8 +169,8 @@ booleanValue = True  <$ tok "true"
    <|> False <$ tok "false"
 
 -- TODO: Escape characters. Look at `jsstring_` in aeson package.
-stringValue :: Parser StringValue
-stringValue = StringValue <$> quotes (takeWhile (/= '"'))
+stringValue :: Parser Text
+stringValue = quotes (takeWhile (/= '"'))
 
 -- Notice it can be empty
 listValue :: Parser ListValue
diff --git a/Data/GraphQL/Schema.hs b/Data/GraphQL/Schema.hs
index 10cd691..1c45af2 100644
--- a/Data/GraphQL/Schema.hs
+++ b/Data/GraphQL/Schema.hs
@@ -18,7 +18,6 @@ module Data.GraphQL.Schema
   , Field
   , Argument(..)
   , Value(..)
-  , StringValue(..)
   ) where
 
 #if !MIN_VERSION_base(4,8,0)
diff --git a/tests/Test/StarWars/Schema.hs b/tests/Test/StarWars/Schema.hs
index ffe16ad..096ccb3 100644
--- a/tests/Test/StarWars/Schema.hs
+++ b/tests/Test/StarWars/Schema.hs
@@ -28,12 +28,12 @@ hero = Schema.objectA "hero" $ \case
 
 human :: Alternative f => Resolver f
 human = Schema.objectA "human" $ \case
-  [Argument "id" (ValueString (StringValue i))] -> character =<< getHuman i
+  [Argument "id" (ValueString i)] -> character =<< getHuman i
   _ -> empty
 
 droid :: Alternative f => Resolver f
 droid = Schema.objectA "droid" $ \case
-   [Argument "id" (ValueString (StringValue i))] -> character =<< getDroid i
+   [Argument "id" (ValueString i)] -> character =<< getDroid i
    _ -> empty
 
 character :: Alternative f => Character -> [Resolver f]