diff --git a/Engine.Physics2D/PhysicsCoroutineManager.cs b/Engine.Physics2D/PhysicsCoroutineManager.cs
index 9837efc..47fb742 100644
--- a/Engine.Physics2D/PhysicsCoroutineManager.cs
+++ b/Engine.Physics2D/PhysicsCoroutineManager.cs
@@ -7,10 +7,7 @@ namespace Syntriax.Engine.Physics2D;
 
 public class PhysicsCoroutineManager : Behaviour, IPhysicsUpdate
 {
-    private readonly Event<IUniverse, IUniverse.UpdateArguments>.EventHandler delegateOnUpdate = null!;
-
     private readonly List<IEnumerator> enumerators = [];
-    private IPhysicsEngine2D? physicsEngine = null;
 
     public IEnumerator CreateCoroutine(IEnumerator enumerator)
     {