diff --git a/Runtime/Code/SDK/GuruSDK.IAP.cs b/Runtime/Code/SDK/GuruSDK.IAP.cs
index 845f3a6..101a491 100644
--- a/Runtime/Code/SDK/GuruSDK.IAP.cs
+++ b/Runtime/Code/SDK/GuruSDK.IAP.cs
@@ -136,7 +136,7 @@ namespace Guru
         /// <param name="productName"></param>
         /// <param name="purchaseCallback"></param>
         [Obsolete("Will be discarded in next version. Using Purchase(string productName, string category, Action<string, bool> purchaseCallback) instead.")]
-        public static void Purchase(string productName, Action<string, bool> purchaseCallback = null)
+        internal static void Purchase(string productName, Action<string, bool> purchaseCallback = null)
         {
             Purchase(productName, "", purchaseCallback);
         }