1 files changed, 6 insertions, 0 deletions
diff --git a/src/main/java/org/zwobble/couscous/ast/FormalArgumentNode.java b/src/main/java/org/zwobble/couscous/ast/FormalArgumentNode.java
index ae80b0c..db13e59 100644
--- a/src/main/java/org/zwobble/couscous/ast/FormalArgumentNode.java
+++ b/src/main/java/org/zwobble/couscous/ast/FormalArgumentNode.java
@@ -3,6 +3,7 @@ package org.zwobble.couscous.ast;
 import org.zwobble.couscous.types.Type;
 import org.zwobble.couscous.ast.visitors.NodeMapper;
 import org.zwobble.couscous.ast.visitors.NodeTransformer;
+import org.zwobble.couscous.util.ExtraIterables;
 
 public class FormalArgumentNode implements VariableNode, Node {
     public static FormalArgumentNode formalArg(VariableDeclaration declaration) {
@@ -32,6 +33,11 @@ public class FormalArgumentNode implements VariableNode, Node {
         return visitor.visit(this);
     }
 
+    @Override
+    public Iterable<? extends Node> childNodes() {
+        return ExtraIterables.empty();
+    }
+
     public FormalArgumentNode transform(NodeTransformer transformer) {
         return new FormalArgumentNode(transformer.transform(declaration));
     }