diff --git a/src/Data/Syntax/Comment.hs b/src/Data/Syntax/Comment.hs
index 6926ab513..9e197840b 100644
--- a/src/Data/Syntax/Comment.hs
+++ b/src/Data/Syntax/Comment.hs
@@ -19,7 +19,7 @@ instance Eq1 Comment where liftEq = genericLiftEq
 instance Ord1 Comment where liftCompare = genericLiftCompare
 instance Show1 Comment where liftShowsPrec = genericLiftShowsPrec
 
-instance AbstractValue t v => Evaluatable es t v Comment where
+instance Evaluatable es t v Comment where
   eval _ = pure unit
 
 -- TODO: nested comment types