diff --git a/go/cmd/updater/launcher.go b/go/cmd/updater/launcher.go
deleted file mode 100644
index ed9b0e0..0000000
--- a/go/cmd/updater/launcher.go
+++ /dev/null
@@ -1,12 +0,0 @@
-//go:build !linux
-
-package main
-
-import (
-	"log"
-	"runtime"
-)
-
-func Launcher() {
-	log.Fatalln("launcher is not for your platform", runtime.GOOS)
-}
diff --git a/go/cmd/updater/launcher_linux.go b/go/cmd/updater/launcher_linux.go
deleted file mode 100644
index 2570139..0000000
--- a/go/cmd/updater/launcher_linux.go
+++ /dev/null
@@ -1,49 +0,0 @@
-package main
-
-import (
-	"flag"
-	"log"
-	"os"
-	"os/exec"
-	"path/filepath"
-)
-
-var local_qt_theme bool
-
-func Launcher() {
-	log.Println("Running as launcher")
-	wd, _ := filepath.Abs(".")
-
-	_debug := flag.Bool("debug", false, "Debug mode")
-	flag.Parse()
-
-	cmd := exec.Command("./nekoray", flag.Args()...)
-
-	system_ld_env := os.Getenv("LD_LIBRARY_PATH")
-	ld_env := "LD_LIBRARY_PATH="
-	if len(system_ld_env) != 0 {
-		ld_env += system_ld_env + ":"
-	}
-	ld_env += "/lib:/usr/lib:/lib64:/usr/lib/x86_64:/usr/local/Qt:/opt/Qt:"
-	ld_env += filepath.Join(wd, "./usr/lib")
-
-	qt_plugin_env := "QT_PLUGIN_PATH="
-	qt_plugin_env += filepath.Join(wd, "./usr/plugins")
-
-	// Qt 5.12 abi is usually compatible with system Qt 5.15
-	// But use package Qt 5.12 by default.
-	cmd.Env = os.Environ()
-	cmd.Env = append(cmd.Env, "NKR_FROM_LAUNCHER=1")
-	cmd.Env = append(cmd.Env, ld_env, qt_plugin_env)
-	log.Println(ld_env, qt_plugin_env, cmd)
-
-	if *_debug {
-		cmd.Env = append(cmd.Env, "QT_DEBUG_PLUGINS=1")
-		cmd.Stdin = os.Stdin
-		cmd.Stderr = os.Stderr
-		cmd.Stdout = os.Stdout
-		cmd.Run()
-	} else {
-		cmd.Start()
-	}
-}
diff --git a/go/cmd/updater/main.go b/go/cmd/updater/main.go
index 24145a0..e5fc5b7 100644
--- a/go/cmd/updater/main.go
+++ b/go/cmd/updater/main.go
@@ -40,16 +40,9 @@ func main() {
 			// 1. update files
 			Updater()
 			// 2. start
-			if os.Getenv("NKR_FROM_LAUNCHER") == "1" {
-				Launcher()
-			} else {
-				exec.Command("./nekoray").Start()
-			}
+			exec.Command("./nekoray").Start()
 		}
 		return
-	} else if strings.HasPrefix(strings.ToLower(exe), "launcher") {
-		Launcher()
-		return
 	}
 	log.Fatalf("wrong name")
 }
diff --git a/libs/build_go.sh b/libs/build_go.sh
index 0df46ae..dc74c8e 100755
--- a/libs/build_go.sh
+++ b/libs/build_go.sh
@@ -26,7 +26,6 @@ export CGO_ENABLED=0
 #### Go: updater ####
 pushd go/cmd/updater
 [ "$GOOS" == "darwin" ] || go build -o $DEST -trimpath -ldflags "-w -s"
-[ "$GOOS" == "linux" ] && mv $DEST/updater $DEST/launcher || true
 popd
 
 #### Go: nekobox_core ####
diff --git a/libs/pack_debian.sh b/libs/pack_debian.sh
index c9c39c0..101f348 100644
--- a/libs/pack_debian.sh
+++ b/libs/pack_debian.sh
@@ -23,15 +23,13 @@ cat >/usr/share/applications/nekoray.desktop<<-END
 [Desktop Entry]
 Name=nekoray
 Comment=Qt based cross-platform GUI proxy configuration manager (backend: sing-box)
-Exec=sudo /opt/nekoray/launcher
+Exec=sh -c "PATH=/opt/nekoray:\$PATH /opt/nekoray/nekoray -appdata"
 Icon=/opt/nekoray/nekobox.png
 Terminal=false
 Type=Application
 Categories=Network;Application;
 END
 
-setcap cap_sys_admin=ep /opt/nekoray/launcher
-
 update-desktop-database
 EOF
 
diff --git a/main/NekoGui.cpp b/main/NekoGui.cpp
index 2209b70..3e6af9a 100644
--- a/main/NekoGui.cpp
+++ b/main/NekoGui.cpp
@@ -402,11 +402,7 @@ namespace NekoGui {
 
     QString FindNekorayRealPath() {
         QString fn;
-#ifdef Q_OS_LINUX
-        fn = QApplication::applicationDirPath() + "/launcher";
-#else
         fn = QApplication::applicationFilePath();
-#endif
         auto fi = QFileInfo(fn);
         if (fi.isSymLink()) return fi.symLinkTarget();
         return fn;
diff --git a/main/main.cpp b/main/main.cpp
index b5b44e2..da23dcc 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -74,11 +74,6 @@ int main(int argc, char* argv[]) {
     if (QFile::exists("updater.old")) {
         QFile::remove("updater.old");
     }
-#ifndef Q_OS_WIN
-    if (!QFile::exists("updater")) {
-        QFile::link("launcher", "updater");
-    }
-#endif
 
     // Flags
     NekoGui::dataStore->argv = QApplication::arguments();
diff --git a/sys/AutoRun.cpp b/sys/AutoRun.cpp
index dbceffd..dae2d4c 100644
--- a/sys/AutoRun.cpp
+++ b/sys/AutoRun.cpp
@@ -170,16 +170,10 @@ void AutoRun_SetEnabled(bool enable) {
     QString desktopFileLocation = userAutoStartPath + appName + QLatin1String(".desktop");
     QStringList appCmdList;
 
-    // nekoray: launcher
-    if (qEnvironmentVariable("NKR_FROM_LAUNCHER") == "1") {
-        appCmdList << QApplication::applicationDirPath() + "/launcher"
-                   << "--";
+    if (QProcessEnvironment::systemEnvironment().contains("APPIMAGE")) {
+        appCmdList << QProcessEnvironment::systemEnvironment().value("APPIMAGE");
     } else {
-        if (QProcessEnvironment::systemEnvironment().contains("APPIMAGE")) {
-            appCmdList << QProcessEnvironment::systemEnvironment().value("APPIMAGE");
-        } else {
-            appCmdList << QApplication::applicationFilePath();
-        }
+        appCmdList << QApplication::applicationFilePath();
     }
 
     appCmdList << "-tray";
diff --git a/ui/mainwindow.cpp b/ui/mainwindow.cpp
index d0283b1..ca7562c 100644
--- a/ui/mainwindow.cpp
+++ b/ui/mainwindow.cpp
@@ -696,9 +696,7 @@ void MainWindow::on_menu_exit_triggered() {
             arguments.removeAll("-flag_restart_tun_on");
             arguments.removeAll("-flag_reorder");
         }
-        auto isLauncher = qEnvironmentVariable("NKR_FROM_LAUNCHER") == "1";
-        if (isLauncher) arguments.prepend("--");
-        auto program = isLauncher ? "./launcher" : QApplication::applicationFilePath();
+        auto program = QApplication::applicationFilePath();
 
         if (exit_reason == 3 || exit_reason == 4) {
             if (exit_reason == 3) arguments << "-flag_restart_tun_on";