diff --git a/scripts/CSharp/Common/CharacterControls/InteractionArea2D.cs b/scripts/CSharp/Common/CharacterControls/InteractionArea2D.cs
index 6fcf84f..e7f1380 100644
--- a/scripts/CSharp/Common/CharacterControls/InteractionArea2D.cs
+++ b/scripts/CSharp/Common/CharacterControls/InteractionArea2D.cs
@@ -13,7 +13,7 @@ public partial class InteractionArea2D : Node2D
     [Export] private bool _useOutline = true;
     [Export] private ShaderMaterial _outlineMaterial;
     [Export] private CanvasItem? _spriteToOutline; // keep to not break old usages. TODO: remove later
-    [Export] private CanvasItem[] _spritesToOutline;
+    [Export] private CanvasItem[] _spritesToOutline = [];
     [Export] private bool _showLabel = true;
     [Export] private int _id = -1; // TODO: remove