diff --git a/Tusker/AppDelegate.swift b/Tusker/AppDelegate.swift
index 6b3c2ec5..3abf44f1 100644
--- a/Tusker/AppDelegate.swift
+++ b/Tusker/AppDelegate.swift
@@ -115,9 +115,8 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
         }
         
         if let clazz = NSClassFromString("SentryInstallation"),
-           let objClazz = clazz as AnyObject as? NSObjectProtocol,
-           objClazz.responds(to: Selector(("id"))),
-           let id = objClazz.perform(Selector(("id"))).takeUnretainedValue() as? String {
+           let objClazz = clazz as AnyObject as? NSObject,
+           let id = objClazz.value(forKey: "id") as? String {
             logger.info("Initialized Sentry with installation/user ID: \(id, privacy: .public)")
         }
     }