diff --git a/crates/border-wars/src/lib.rs b/crates/border-wars/src/lib.rs
index f6e9173..a4acdb8 100644
--- a/crates/border-wars/src/lib.rs
+++ b/crates/border-wars/src/lib.rs
@@ -19,14 +19,3 @@ pub enum CurrentScene {
     /// When we play this wonderful game.
     Game,
 }
-
-/// Calculates the ui_scale.0 depending on the size of the main node
-/// in order to make the screen responsive
-pub fn change_scaling(mut ui_scale: ResMut<UiScale>, window: Query<&Window>) {
-    let window = window.single();
-    let (a, b) = (
-        window.resolution.width() / 1280.,
-        window.resolution.height() / 720.,
-    );
-    ui_scale.0 = if a < b { a } else { b } as f64
-}
diff --git a/crates/border-wars/src/responsive_scale.rs b/crates/border-wars/src/responsive_scale.rs
new file mode 100644
index 0000000..89681e5
--- /dev/null
+++ b/crates/border-wars/src/responsive_scale.rs
@@ -0,0 +1,13 @@
+const DEFAULT_WIDTH = 1280.
+const DEFAULT_HEIGHT = 720.
+
+/// Calculates the ui_scale.0 depending on the size of the main node
+/// in order to make the screen responsive
+pub fn change_scaling(mut ui_scale: ResMut<UiScale>, window: Query<&Window>) {
+    let window = window.single();
+    let (a, b) = (
+        window.resolution.width() / DEFAULT_WIDTH,
+        window.resolution.height() / DEFAULT_HEIGHT,
+    );
+    ui_scale.0 = if a < b { a } else { b } as f64
+}
\ No newline at end of file