diff --git a/haskell-src-exts-util.cabal b/haskell-src-exts-util.cabal
--- a/haskell-src-exts-util.cabal
+++ b/haskell-src-exts-util.cabal
@@ -3,7 +3,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           haskell-src-exts-util
-version:        0.2.1.1
+version:        0.2.1.2
 synopsis:       Helper functions for working with haskell-src-exts trees
 description:    see README.md
 category:       language
diff --git a/src/Language/Haskell/Exts/Util.hs b/src/Language/Haskell/Exts/Util.hs
--- a/src/Language/Haskell/Exts/Util.hs
+++ b/src/Language/Haskell/Exts/Util.hs
@@ -1,4 +1,4 @@
-{-# OPTIONS -Wno-orphans #-}
+{-# OPTIONS -fno-warn-orphans #-}
 module Language.Haskell.Exts.Util
   ( -- * Free variables of ASTs
     FreeVars(..)