diff --git a/Engine.Physics2D/Collider2DShapeBehaviour.cs b/Engine.Physics2D/Collider2DShapeBehaviour.cs
index a4d993d..a658b14 100644
--- a/Engine.Physics2D/Collider2DShapeBehaviour.cs
+++ b/Engine.Physics2D/Collider2DShapeBehaviour.cs
@@ -8,7 +8,7 @@ public class Collider2DShapeBehaviour : Collider2DBehaviourBase, IShapeCollider2
     public Shape ShapeWorld { get => _shapeWorld; protected set => _shapeWorld = value; }
     public Shape ShapeLocal { get; set; } = Shape.Box;
 
-    private Shape _shapeWorld = Shape.Box;
+    private Shape _shapeWorld = Shape.Box.CreateCopy();
 
     public override void CalculateCollider() => Transform.TransformShape(ShapeLocal, ref _shapeWorld);