diff --git a/lib/Bril.hs b/lib/Bril.hs
index b0453f2..a7a08f7 100644
--- a/lib/Bril.hs
+++ b/lib/Bril.hs
@@ -5,7 +5,7 @@ module Bril (
     parseBrilFromPath, parseBrilJSON,
     )where
 
-import Data.Aeson (FromJSON, parseJSON, withObject, withText, withScientific, (.:), (.:?), eitherDecode)
+import Data.Aeson (FromJSON, parseJSON, withObject, withText, withBool, withScientific, (.:), (.:?), eitherDecode)
 import Data.Aeson.Types (Parser, modifyFailure)
 import qualified Data.Aeson (Value, Object, Key)
 import Data.Aeson.KeyMap
@@ -203,19 +203,8 @@ instance FromJSON Type where
 
 parseValue :: Type -> Data.Aeson.Value -> Parser Value
 parseValue Bool =
-    withText "BoolValue" $ \v ->
-        case v of
-             "true" -> return $ BoolValue True
-             "false" -> return $ BoolValue False
-             _ -> fail $ "invalid bool literal: " ++ (T.unpack v)
---parseValue Int =
---    withText "IntValue" $ \v ->
---        case ((signed decimal :: Reader Int64) v) of
---            Left x -> fail $ "invalid int literal: " ++ x
---            Right (val, t) ->
---                if (T.null t)
---                    then return $ IntValue val
---                    else fail $ "invalid int literal: " ++ (T.unpack v)
+    withBool "BoolValue" (return . BoolValue)
+
 parseValue Int =
     withScientific "IntValue" $ \v ->
         if (not (isInteger v))
diff --git a/tests/Main.hs b/tests/Main.hs
index 61e1709..55c0bdb 100644
--- a/tests/Main.hs
+++ b/tests/Main.hs
@@ -20,11 +20,9 @@ testTypes = TestCase $ do
 testLiterals :: Test
 testLiterals = TestCase $ do
     assertEqual "true literal"
-        (parseLiteral B.Bool ("true"::Text)) (Success $ B.BoolValue True)
+        (parseLiteral B.Bool True) (Success $ B.BoolValue True)
     assertEqual "false literal"
-        (parseLiteral B.Bool ("false"::Text)) (Success $ B.BoolValue False)
-    assertEqual "wrong bool literal"
-        (parseLiteral B.Bool ("xxx"::Text)) (Error "invalid bool literal: xxx")
+        (parseLiteral B.Bool False) (Success $ B.BoolValue False)
 
     assertEqual "int literal"
         (parseLiteral B.Int (1434 :: Int)) (Success $ B.IntValue 1434)