diff --git a/Crypto/Hash/SHAKE.hs b/Crypto/Hash/SHAKE.hs
index aa9d692..5d36228 100644
--- a/Crypto/Hash/SHAKE.hs
+++ b/Crypto/Hash/SHAKE.hs
@@ -12,7 +12,6 @@
 {-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE KindSignatures #-}
 {-# LANGUAGE DataKinds #-}
-{-# LANGUAGE ConstraintKinds #-}
 {-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE TypeOperators #-}
 {-# LANGUAGE TypeFamilies #-}
diff --git a/tests/Hash.hs b/tests/Hash.hs
index f139bc1..5c699ef 100644
--- a/tests/Hash.hs
+++ b/tests/Hash.hs
@@ -1,5 +1,4 @@
 {-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE ViewPatterns #-}
 {-# LANGUAGE ExistentialQuantification #-}
 {-# LANGUAGE DataKinds #-}
 module Hash