diff --git a/src/application.vala b/src/application.vala
index fbff477..e81d875 100644
--- a/src/application.vala
+++ b/src/application.vala
@@ -1,17 +1,17 @@
 public class WriteAs.Application : Gtk.Application {
     construct {
         Intl.setlocale(LocaleCategory.ALL, "");
         Intl.textdomain("write.as");
 
         application_id = "write-as-gtk.desktop";
     }
 
     public override void activate() {
         if (get_windows().length() == 0)
-            new Gtk.ApplicationWindow(this).show_all();
+            new WriteAs.MainWindow(this).show_all();
     }
 
     public static int main(string[] args) {
         return new WriteAs.Application().run(args);
     }
 }
diff --git a/src/meson.build b/src/meson.build
index 98c28c3..fbe61f1 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -1,8 +1,9 @@
 executable('write-as-gtk',
     'application.vala',
+    'window.vala',
 
     c_args: ['-include', 'config.h'],
     link_args: '-lm',
     dependencies: [dependency('gtk+-3.0')],
     install: true
 )
diff --git a/src/window.vala b/src/window.vala
new file mode 100644
index 0000000..5a31baa
--- /dev/null
+++ b/src/window.vala
@@ -0,0 +1,17 @@
+public class WriteAs.MainWindow : Gtk.ApplicationWindow {
+    private Gtk.TextView canvas;
+
+    construct {
+        var header = new Gtk.HeaderBar();
+        header.title = "";
+        header.show_close_button = true;
+        set_titlebar(header);
+
+        canvas = new Gtk.TextView();
+        add(canvas);
+    }
+
+    public MainWindow(Gtk.Application app) {
+        set_application(app);
+    }
+}