diff --git a/Reader/SceneDelegate.swift b/Reader/SceneDelegate.swift
index 28c7432..6664156 100644
--- a/Reader/SceneDelegate.swift
+++ b/Reader/SceneDelegate.swift
@@ -125,7 +125,7 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
         case NSUserActivity.readAllType:
             split.showItemList(.all)
         case NSUserActivity.readFeedType:
-            guard let feedID = activity.feedID() else {
+            guard let feedID = activity.feedID else {
                 break
             }
             let req = Feed.fetchRequest()
@@ -134,7 +134,7 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
                 split.showItemList(.feed(feed))
             }
         case NSUserActivity.readGroupType:
-            guard let groupID = activity.groupID() else {
+            guard let groupID = activity.groupID else {
                 break
             }
             let req = Group.fetchRequest()
diff --git a/Reader/UserActivities.swift b/Reader/UserActivities.swift
index 51d26af..c16975a 100644
--- a/Reader/UserActivities.swift
+++ b/Reader/UserActivities.swift
@@ -32,7 +32,7 @@ extension NSUserActivity {
         }
     }
     
-    func feedID() -> String? {
+    var feedID: String? {
         if activityType == NSUserActivity.readFeedType {
             return userInfo?["feedID"] as? String
         } else {
@@ -40,7 +40,7 @@ extension NSUserActivity {
         }
     }
     
-    func groupID() -> String? {
+    var groupID: String? {
         if activityType == NSUserActivity.readGroupType {
             return userInfo?["groupID"] as? String
         } else {