diff --git a/Cabal-syntax/src/Distribution/Types/VersionRange.hs b/Cabal-syntax/src/Distribution/Types/VersionRange.hs
index 80b0373df9c..c1e72f728ac 100644
--- a/Cabal-syntax/src/Distribution/Types/VersionRange.hs
+++ b/Cabal-syntax/src/Distribution/Types/VersionRange.hs
@@ -1,5 +1,4 @@
 {-# LANGUAGE LambdaCase #-}
-{-# LANGUAGE PatternSynonyms #-}
 {-# LANGUAGE ViewPatterns #-}
 
 module Distribution.Types.VersionRange