diff --git a/MonitorControl/AppDelegate.swift b/MonitorControl/AppDelegate.swift
index 97b6719..0a1eed0 100644
--- a/MonitorControl/AppDelegate.swift
+++ b/MonitorControl/AppDelegate.swift
@@ -186,7 +186,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
     AMCoreAudio.NotificationCenter.defaultCenter.subscribe(self, eventType: AudioHardwareEvent.self, dispatchQueue: DispatchQueue.main)
 
     // listen for accessibility status changes
-    accessibilityObserver = DistributedNotificationCenter.default().addObserver(forName: .accessibilityApi, object: nil, queue: nil) { _ in
+    self.accessibilityObserver = DistributedNotificationCenter.default().addObserver(forName: .accessibilityApi, object: nil, queue: nil) { _ in
       DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
         self.startOrRestartMediaKeyTap()
       }
diff --git a/MonitorControl/Extensions/NSNotification+Extension.swift b/MonitorControl/Extensions/NSNotification+Extension.swift
index 4ff071f..fec8d83 100644
--- a/MonitorControl/Extensions/NSNotification+Extension.swift
+++ b/MonitorControl/Extensions/NSNotification+Extension.swift
@@ -1,5 +1,5 @@
 import Cocoa
 
 extension NSNotification.Name {
-	static let accessibilityApi = NSNotification.Name.init(rawValue: "com.apple.accessibility.api")
+  static let accessibilityApi = NSNotification.Name(rawValue: "com.apple.accessibility.api")
 }
diff --git a/MonitorControlHelper/main.swift b/MonitorControlHelper/main.swift
index 2f7efc8..29613c4 100644
--- a/MonitorControlHelper/main.swift
+++ b/MonitorControlHelper/main.swift
@@ -10,7 +10,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
       return NSApp.terminate(self)
     }
 
-    var pathComponents = bundlePath.pathComponents
+    let pathComponents = bundlePath.pathComponents
     let path = NSString.path(withComponents: Array(pathComponents[0..<(pathComponents.count - 4)]))
 
     NSWorkspace.shared.launchApplication(path)