diff --git a/ApplicationLibrary/Views/Setting/PacketTunnelView.swift b/ApplicationLibrary/Views/Setting/PacketTunnelView.swift
index 5196551..8de6396 100644
--- a/ApplicationLibrary/Views/Setting/PacketTunnelView.swift
+++ b/ApplicationLibrary/Views/Setting/PacketTunnelView.swift
@@ -12,8 +12,8 @@ struct PacketTunnelView: View {
     @State private var excludeLocalNetworks = false
     @State private var enforceRoutes = false
 
-    public init() {}
-    public var body: some View {
+    init() {}
+    var body: some View {
         viewBuilder {
             if isLoading {
                 ProgressView().onAppear {
diff --git a/IntentsExtension/Intents.swift b/IntentsExtension/Intents.swift
index 7f00471..b5d261e 100644
--- a/IntentsExtension/Intents.swift
+++ b/IntentsExtension/Intents.swift
@@ -4,7 +4,7 @@ import Libbox
 import Library
 
 struct StartServiceIntent: AppIntent {
-    public static var title: LocalizedStringResource = "Start sing-box"
+    static var title: LocalizedStringResource = "Start sing-box"
 
     static var description =
         IntentDescription("Start or reload sing-box servie with specified profile")
diff --git a/Library/Network/ExtensionPlatformInterface.swift b/Library/Network/ExtensionPlatformInterface.swift
index 324c355..fcc00f2 100644
--- a/Library/Network/ExtensionPlatformInterface.swift
+++ b/Library/Network/ExtensionPlatformInterface.swift
@@ -219,7 +219,7 @@ public class ExtensionPlatformInterface: NSObject, LibboxPlatformInterfaceProtoc
         tunnel.writeMessage(message)
     }
 
-    private var nwMonitor: NWPathMonitor? = nil
+    private var nwMonitor: NWPathMonitor?
 
     public func startDefaultInterfaceMonitor(_ listener: LibboxInterfaceUpdateListenerProtocol?) throws {
         guard let listener else {
@@ -287,7 +287,7 @@ public class ExtensionPlatformInterface: NSObject, LibboxPlatformInterfaceProtoc
             iterator = array.makeIterator()
         }
 
-        private var nextValue: LibboxNetworkInterface? = nil
+        private var nextValue: LibboxNetworkInterface?
 
         func hasNext() -> Bool {
             nextValue = iterator.next()
diff --git a/Library/Network/ExtensionProvider.swift b/Library/Network/ExtensionProvider.swift
index 8bcccc7..6d83ed1 100644
--- a/Library/Network/ExtensionProvider.swift
+++ b/Library/Network/ExtensionProvider.swift
@@ -9,7 +9,7 @@ import NetworkExtension
 #endif
 
 open class ExtensionProvider: NEPacketTunnelProvider {
-    public var username: String? = nil
+    public var username: String?
     private var commandServer: LibboxCommandServer!
     private var boxService: LibboxBoxService!
     private var systemProxyAvailable = false
diff --git a/SFM.System/StandaloneApplicationDelegate.swift b/SFM.System/StandaloneApplicationDelegate.swift
index bbf9303..ad90f82 100644
--- a/SFM.System/StandaloneApplicationDelegate.swift
+++ b/SFM.System/StandaloneApplicationDelegate.swift
@@ -4,7 +4,7 @@ import Library
 import MacLibrary
 
 class StandaloneApplicationDelegate: ApplicationDelegate {
-    public func applicationWillFinishLaunching(_: Notification) {
+    func applicationWillFinishLaunching(_: Notification) {
         Variant.useSystemExtension = true
         Variant.isBeta = false
         Task {