diff --git a/birdie.py b/birdie.py
index 169e6a6..6a030fd 100644
--- a/birdie.py
+++ b/birdie.py
@@ -21,13 +21,20 @@ def on_mouse_up(): # fonction 'quand la souris ne click plus'
 def update():
     titi.y += titi.speed # mise a jour (60x/sec) de titi
     birdi.y += birdi.speed
+
 def draw():
     screen.blit('background', (0, 0)) # import arrière plan
     titi.draw() # 'dessiner' titi
     birdi.draw()
 
+
 birdi = Actor("bird2", (50, 250))
-birdi.speed = 8
+birdi.speed = 2
 titi = Actor('bird1', (75, 350)) # définir position de titi
-titi.speed = 5 # définir vitesses de chute de titi
+titi.speed = 3 # définir vitesses de chute de titi
+
+if titi.x > 400 and birdy.x > 400:
+    titi.x = 2
+    birdi.x = 4
+
 pgzrun.go() # syntaxe 'conventionnelle' de pgzero
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