diff --git a/Assets_DLL/Core/IAP/PurchaseManager.cs b/Assets_DLL/Core/IAP/PurchaseManager.cs
index 201cfdd..9355d66 100644
--- a/Assets_DLL/Core/IAP/PurchaseManager.cs
+++ b/Assets_DLL/Core/IAP/PurchaseManager.cs
@@ -22,8 +22,8 @@ namespace Core.IAP
             _purchaseManager = new PurchaseManagerBase();
             _purchaseManager.InitializePurchasing();
 
-            _purchaseManager.OnPurchaseSuccess += (product) => OnPurchaseSuccess(product);
-            _purchaseManager.OnPurchaseFaile += (product, error) => OnPurchaseFailed(product, error);
+            _purchaseManager.OnPurchaseSuccess += (product) => OnPurchaseSuccess?.Invoke(product);
+            _purchaseManager.OnPurchaseFaile += (product, error) => OnPurchaseFailed?.Invoke(product, error);
         }
 
         public static bool IsProductPurchased(string productId) =>