diff --git a/Data/GraphQL/Parser.hs b/Data/GraphQL/Parser.hs
index 0fb0ffc..3b72104 100644
--- a/Data/GraphQL/Parser.hs
+++ b/Data/GraphQL/Parser.hs
@@ -179,7 +179,7 @@ defaultValue = tok "=" *> value
 -- * Input Types
 
 type_ :: Parser Type
-type_ = TypeNamed   <$> name
+type_ = TypeNamed   <$> name <* but "!"
     <|> TypeList    <$> brackets type_
     <|> TypeNonNull <$> nonNullType
     <?> "type_ error!"