1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/java/org/zwobble/couscous/ast/structure/NodeStructure.java b/src/main/java/org/zwobble/couscous/ast/structure/NodeStructure.java
index 6054711..47ba9b6 100644
--- a/src/main/java/org/zwobble/couscous/ast/structure/NodeStructure.java
+++ b/src/main/java/org/zwobble/couscous/ast/structure/NodeStructure.java
@@ -70,7 +70,7 @@ public class NodeStructure {
             }
 
             @Override
-            public Stream<ExpressionNode> visit(ConstructorCallNode call) {
+            public Stream<? extends ExpressionNode> visit(ConstructorCallNode call) {
                 return call.getArguments().stream();
             }