diff --git a/birdie.py b/birdie.py
index 5c80b45..a863f0a 100644
--- a/birdie.py
+++ b/birdie.py
@@ -3,6 +3,7 @@ import pgzrun
 TITLE = "Paf l'oiseau"
 WIDTH = 400
 HEIGHT = 708
+direction = 1
 
 def on_mouse_down():
     print('Stop!')
@@ -13,9 +14,12 @@ def on_mouse_up():
     blackbird.speed = 1
 
 def update():
+    if titi.left > WIDTH:
+        titi.right = 0
+    if titi.right < 0:
+        titi.left = WIDTH
     titi.x += titi.speed
-    blackbird.x += blackbird.speed
-    
+        
 def draw():
     screen.blit('background', (0, 0))
     titi.draw()