diff --git a/Sources/InAppPurchaseLib/Common/IAPCallback.swift b/Sources/InAppPurchaseLib/Common/IAPCallback.swift
index a784058..ac65678 100644
--- a/Sources/InAppPurchaseLib/Common/IAPCallback.swift
+++ b/Sources/InAppPurchaseLib/Common/IAPCallback.swift
@@ -14,6 +14,12 @@ public struct IAPPurchaseResult {
     public internal(set) var state: IAPPurchaseResultState
     public internal(set) var iapError: IAPError? = nil
     public internal(set) var skError: SKError? = nil
+    
+    public var localizedDescription: String? {
+        if skError != nil { return skError!.localizedDescription }
+        if iapError != nil { return iapError!.localizedDescription }
+        return nil
+    }
 }
 
 public enum IAPPurchaseResultState {
diff --git a/Sources/InAppPurchaseLib/InAppPurchaseLib.swift b/Sources/InAppPurchaseLib/InAppPurchaseLib.swift
index 55ce005..ee8d09f 100644
--- a/Sources/InAppPurchaseLib/InAppPurchaseLib.swift
+++ b/Sources/InAppPurchaseLib/InAppPurchaseLib.swift
@@ -83,9 +83,6 @@ public extension InAppPurchaseLib {
 
 /* MARK: - The protocol that you must adopt. */
 public protocol IAPPurchaseDelegate {
-    // Initialize the IAPPurchaseDelegate instance.
-    init()
-    
     // Called when a product is newly purchased, updated or restored.
     func productPurchased(productIdentifier: String)
 }
@@ -93,7 +90,7 @@ public protocol IAPPurchaseDelegate {
 
 // The default implementation of IAPPurchaseDelegate if no other is provided.
 public class DefaultPurchaseDelegate: IAPPurchaseDelegate {
-    public required init(){}
+    public init(){}
     public func productPurchased(productIdentifier: String) {
         // Finish the product transactions.
         InAppPurchase.finishTransactions(for: productIdentifier)