diff --git a/src/Data/Swagger/Internal.hs b/src/Data/Swagger/Internal.hs
index 8506d43..2022c12 100644
--- a/src/Data/Swagger/Internal.hs
+++ b/src/Data/Swagger/Internal.hs
@@ -816,9 +816,9 @@ referencedToJSON :: ToJSON a => Text -> Referenced a -> Value
 referencedToJSON prefix (Ref (Reference ref)) = object [ "$ref" .= (prefix <> ref) ]
 referencedToJSON _ (Inline x) = toJSON x
 
-instance ToJSON (Referenced Schema)     where toJSON = referencedToJSON "#/definitions/"
-instance ToJSON (Referenced Parameter)  where toJSON = referencedToJSON "#/parameters/"
-instance ToJSON (Referenced Response)   where toJSON = referencedToJSON "#/responses/"
+instance ToJSON (Referenced Schema)   where toJSON = referencedToJSON "#/definitions/"
+instance ToJSON (Referenced Param)    where toJSON = referencedToJSON "#/parameters/"
+instance ToJSON (Referenced Response) where toJSON = referencedToJSON "#/responses/"
 
 instance ToJSON (SwaggerType t) where
   toJSON SwaggerArray   = "array"
@@ -976,9 +976,9 @@ referencedParseJSON prefix js@(Object o) = do
         Nothing     -> fail $ "expected $ref of the form \"" <> Text.unpack prefix <> "*\", but got " <> show s
         Just suffix -> pure (Reference suffix)
 
-instance FromJSON (Referenced Schema)    where parseJSON = referencedParseJSON "#/definitions/"
-instance FromJSON (Referenced Parameter) where parseJSON = referencedParseJSON "#/parameters/"
-instance FromJSON (Referenced Response)  where parseJSON = referencedParseJSON "#/responses/"
+instance FromJSON (Referenced Schema)   where parseJSON = referencedParseJSON "#/definitions/"
+instance FromJSON (Referenced Param)    where parseJSON = referencedParseJSON "#/parameters/"
+instance FromJSON (Referenced Response) where parseJSON = referencedParseJSON "#/responses/"
 
 instance FromJSON Xml where
   parseJSON = genericParseJSON (jsonPrefix "xml")
diff --git a/src/Data/Swagger/Schema/Validation.hs b/src/Data/Swagger/Schema/Validation.hs
index 5b3c8f7..ba595a5 100644
--- a/src/Data/Swagger/Schema/Validation.hs
+++ b/src/Data/Swagger/Schema/Validation.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE DeriveFunctor #-}
+{-# LANGUAGE GADTs #-}
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE PackageImports #-}
 {-# LANGUAGE RankNTypes #-}
@@ -87,13 +88,13 @@ validateWithSchema schema value
 
     validateType =
       case (schema ^. schemaType, value) of
-        (SchemaNull,    Null)       -> valid
-        (SchemaBoolean, Bool _)     -> valid
-        (SchemaInteger, Number n)   -> validateInteger n
-        (SchemaNumber,  Number n)   -> validateNumber n
-        (SchemaString,  String s)   -> validateString s
-        (SchemaArray,   Array xs)   -> validateArray xs
-        (SchemaObject,  Object o)   -> validateObject o
+        (SwaggerNull,    Null)       -> valid
+        (SwaggerBoolean, Bool _)     -> valid
+        (SwaggerInteger, Number n)   -> validateInteger n
+        (SwaggerNumber,  Number n)   -> validateNumber n
+        (SwaggerString,  String s)   -> validateString s
+        (SwaggerArray,   Array xs)   -> validateArray xs
+        (SwaggerObject,  Object o)   -> validateObject o
         (t, _) -> invalid $ "expected JSON value of type " ++ show t ++ ": " ++ show (encode value)
 
     validateInteger n