diff --git a/src/Syntax.hs b/src/Syntax.hs
index 85763201b..84d76578c 100644
--- a/src/Syntax.hs
+++ b/src/Syntax.hs
@@ -22,6 +22,8 @@ data Syntax a f
   | FunctionCall f [f]
   -- | A ternary has a condition, a true case and a false case
   | Ternary { ternaryCondition :: f, ternaryCases :: [f] }
+  -- | An anonymous function has a list of expressions and params.
+  | AnonymousFunction { params :: (Maybe f), expressions :: f }
   -- | A function has a list of expressions.
   | Function { id :: (Maybe f), params :: (Maybe f), expressions :: f }
   -- | An assignment has an identifier where f can be a member access, and the value is another syntax element (function call, leaf, etc.)