diff --git a/src/main.rs b/src/main.rs
index 8687605..cf8f091 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,7 +10,7 @@ fn build_ui(application: &gtk::Application) {
     let window = gtk::ApplicationWindow::new(application);
 
     window.set_title("youtube-dl");
-    window.set_border_width(10);
+    window.set_border_width(SPACING as u32);
     window.set_position(gtk::WindowPosition::Center);
     window.set_default_size(400, 100);