diff --git a/birdie.py b/birdie.py
index 6a030fd..fd652e5 100644
--- a/birdie.py
+++ b/birdie.py
@@ -14,9 +14,11 @@ def on_mouse_down(): # fonction 'click avec souris'
 def on_mouse_up(): # fonction 'quand la souris ne click plus'
     print('relache souris')
     titi.y += 6
-    titi.speed = 5
+    titi.speed = 3
+    titi.speed += 1
     birdi.y += 10
-    birdi.speed = 8
+    birdi.speed = 2
+    birdi.speed += 1
 
 def update():
     titi.y += titi.speed # mise a jour (60x/sec) de titi