diff --git a/Package.swift b/Package.swift
index eecbc46..ff777a6 100644
--- a/Package.swift
+++ b/Package.swift
@@ -6,7 +6,7 @@ let package = Package(
     name: "AcknowList",
     defaultLocalization: "en",
     platforms: [
-        .iOS(.v9), .tvOS(.v9), watchOS(.v7), macOS(.v10_15)
+        .iOS(.v9), .tvOS(.v9), .watchOS(.v7), .macOS(.v10_15)
     ],
     products: [
         .library(name: "AcknowList", targets: ["AcknowList"])
diff --git a/Sources/AcknowList/AcknowListViewController.swift b/Sources/AcknowList/AcknowListViewController.swift
index 23b344a..7778566 100644
--- a/Sources/AcknowList/AcknowListViewController.swift
+++ b/Sources/AcknowList/AcknowListViewController.swift
@@ -26,6 +26,7 @@ import UIKit
 
 /// Subclass of `UITableViewController` that displays a list of acknowledgements.
 @available(iOS 9.0.0, tvOS 9.0.0, *)
+@available(iOSApplicationExtension, unavailable)
 open class AcknowListViewController: UITableViewController {
 
     /// The represented array of `Acknow`.