diff --git a/src/Syntax.hs b/src/Syntax.hs
index 263b4fd14..a2401464c 100644
--- a/src/Syntax.hs
+++ b/src/Syntax.hs
@@ -17,4 +17,4 @@ data Syntax
   | Fixed [f]
   -- | A branch of child nodes indexed by some String identity. This is useful for identifying e.g. methods & properties in a class scope by their names. Note that comments can generally occur in these scopes as well; one strategy for dealing with this is to identify comments by their text in the source.
   | Keyed (OrderedMap T.Text f)
-  deriving (Eq, Foldable, Functor, Ord, Show, Traversable)
+  deriving (Eq, Foldable, Functor, Generic, Ord, Show, Traversable)