diff --git a/Engine.Core/BehaviourBase.cs b/Engine.Core/BehaviourBase.cs
index a89f88f..c385ef6 100644
--- a/Engine.Core/BehaviourBase.cs
+++ b/Engine.Core/BehaviourBase.cs
@@ -11,7 +11,6 @@ public abstract class BehaviourBase : BaseEntity, IBehaviour
     public event IActive.ActiveChangedEventHandler? OnActiveChanged = null;
 
     private IBehaviourController _behaviourController = null!;
-
     public IBehaviourController BehaviourController => _behaviourController;
 
     private int _priority = 0;
@@ -29,7 +28,8 @@ public abstract class BehaviourBase : BaseEntity, IBehaviour
         }
     }
 
-    public bool IsActive { get; private set; } = false;
+    private bool _isActive = false;
+    public bool IsActive => _isActive;
 
     protected virtual void OnAssign(IBehaviourController behaviourController) { }
     public bool Assign(IBehaviourController behaviourController)
@@ -80,7 +80,7 @@ public abstract class BehaviourBase : BaseEntity, IBehaviour
     private void UpdateActive()
     {
         bool previousActive = IsActive;
-        IsActive = StateEnable.Enabled && _behaviourController.HierarchyObject.IsActive;
+        _isActive = StateEnable.Enabled && _behaviourController.HierarchyObject.IsActive;
 
         if (previousActive != IsActive)
             OnActiveChanged?.Invoke(this, previousActive);
diff --git a/Engine.Core/HierarchyObject.cs b/Engine.Core/HierarchyObject.cs
index b25bb26..2eecd4c 100644
--- a/Engine.Core/HierarchyObject.cs
+++ b/Engine.Core/HierarchyObject.cs
@@ -20,12 +20,15 @@ public class HierarchyObject : BaseEntity, IHierarchyObject
     private string _name = nameof(HierarchyObject);
     private IGameManager _gameManager = null!;
     private IBehaviourController _behaviourController = null!;
+    private bool _isActive = false;
     private readonly List<IHierarchyObject> _children = [];
 
     public IHierarchyObject? Parent { get; private set; } = null;
     public IReadOnlyList<IHierarchyObject> Children => _children;
+    public IBehaviourController BehaviourController => _behaviourController;
     public IGameManager GameManager => _gameManager;
     public bool IsInHierarchy => _gameManager is not null;
+    public bool IsActive => _isActive;
 
     public string Name
     {
@@ -40,10 +43,6 @@ public class HierarchyObject : BaseEntity, IHierarchyObject
         }
     }
 
-    public IBehaviourController BehaviourController => _behaviourController;
-
-    public bool IsActive { get; private set; } = false;
-
     protected virtual void OnEnteringHierarchy(IGameManager gameManager) { }
     bool IHierarchyObject.EnterHierarchy(IGameManager gameManager)
     {
@@ -142,12 +141,12 @@ public class HierarchyObject : BaseEntity, IHierarchyObject
     }
 
     private void OnParentActiveChanged(IActive sender, bool previousState) => UpdateActive();
-    private void OnStateEnabledChanged(IStateEnable senfder, bool previousState) => UpdateActive();
+    private void OnStateEnabledChanged(IStateEnable sender, bool previousState) => UpdateActive();
 
     private void UpdateActive()
     {
         bool previousActive = IsActive;
-        IsActive = StateEnable.Enabled && (Parent?.IsActive ?? true);
+        _isActive = StateEnable.Enabled && (Parent?.IsActive ?? true);
 
         if (previousActive != IsActive)
             OnActiveChanged?.Invoke(this, previousActive);