diff --git a/src/window.vala b/src/window.vala
index 5a31baa..17d84f1 100644
--- a/src/window.vala
+++ b/src/window.vala
@@ -1,17 +1,19 @@
 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);
+
+        set_default_size(800, 600);
     }
 }