diff --git a/main.py b/main.py
index d183cc7..cd6974d 100644
--- a/main.py
+++ b/main.py
@@ -140,6 +140,7 @@ class Application(Gtk.Application):
                 application=self,
                 task_manager=self.task_manager,
             )
+            win.set_default_size(600, 400)
 
         win.present()