diff --git a/script.js b/script.js
index 0a925a8..56ff520 100644
--- a/script.js
+++ b/script.js
@@ -83,11 +83,11 @@ class Moteur {
     }
 
     avancer(v) {
-        this.send(-1, -1, v);
+        this.send(1, 1, v);
     }
 
     reculer(v) {
-        this.send(1, 1, v);
+        this.send(-1, -1, v);
     }
 
     droite(v) {