diff --git a/src/game/main.rs b/src/game/main.rs
index 2413f2d..e3720ac 100644
--- a/src/game/main.rs
+++ b/src/game/main.rs
@@ -28,7 +28,7 @@ fn main() {
 
     let mut renderer = Renderer::new(game_width, game_height);
 
-    let mut after_loop = None;
+    let mut after_loop = Instant::now();
     let mut running = true;
 
     loop {
@@ -53,13 +53,8 @@ fn main() {
         }
 
         // Manage the physics
-        let duration = if let Some(instant) = after_loop {
-            Instant::now().duration_since(instant)
-        } else {
-            Duration::from_millis(20)
-        };
-
-        after_loop = Some(Instant::now());
+        let duration = Instant::now().duration_since(after_loop);
+        after_loop = Instant::now();
 
         scene.update(&duration);