diff --git a/Assets/_DDD/_Scripts/Game/GameUi/BaseUi/SimpleViewModel.cs b/Assets/_DDD/_Scripts/Game/GameUi/BaseUi/SimpleViewModel.cs
index 77b43a5e9..20ee6f0c3 100644
--- a/Assets/_DDD/_Scripts/Game/GameUi/BaseUi/SimpleViewModel.cs
+++ b/Assets/_DDD/_Scripts/Game/GameUi/BaseUi/SimpleViewModel.cs
@@ -9,8 +9,8 @@ public abstract class SimpleViewModel : MonoBehaviour, INotifyPropertyChanged
     {
         public event PropertyChangedEventHandler PropertyChanged;
 
-        public virtual void Initialize() { }
-        public virtual void Cleanup() { }
+        public abstract void Initialize();
+        public abstract void Cleanup();
 
         /// <summary>
         /// PropertyChanged 이벤트 발생