--- a/src/gtk.rs
+++ b/src/gtk.rs
@@ -18,9 +18,8 @@ use gio::prelude::*;
 use glib::clone;
 use gtk::prelude::*;
 
-use std::env::args;
 use std::io::ErrorKind;
-use std::sync::Arc;
+use std::sync::{Arc, Mutex};
 use input_linux::Key;
 
 use crate::{
@@ -68,7 +67,7 @@ fn build_ui(application: &gtk::Applicati
     build_main_menu(application);
 
     let state = match State::new() {
-        Ok(state) => state,
+        Ok(state) => Arc::new(Mutex::new(state)),
         Err(err) => {
             match err.kind() {
                 ErrorKind::NotFound => {
@@ -179,12 +178,12 @@ fn build_ui(application: &gtk::Applicati
     window.show_all();
 }
 
-pub fn main() {
+pub fn main(args: &[String]) {
     let application = gtk::Application::new(
         Some("fr.linkmauve.TabletEmu"),
         gio::ApplicationFlags::empty(),
     )
     .expect("Initialisation failed…");
     application.connect_activate(build_ui);
-    application.run(&args().collect::<Vec<_>>());
+    application.run(args);
 }