diff --git a/src/Syntax.hs b/src/Syntax.hs
index 6b3e64b9f..8027f33e9 100644
--- a/src/Syntax.hs
+++ b/src/Syntax.hs
@@ -1,7 +1,5 @@
 module Syntax where
 
-{-# LANGUAGE DeriveFunctor #-}
-
 import Data.Map
 
 data Syntax a f =