diff --git a/simulator/send-random/send-random.ino b/simulator/send-random/send-random.ino
index 5dbb913..6090f86 100644
--- a/simulator/send-random/send-random.ino
+++ b/simulator/send-random/send-random.ino
@@ -36,14 +36,13 @@ void updatevalues(void)
 void sendvalues(void)
 {
   int foo;
+  char ligne[100];
 
-  Serial.print("X");
-  for (foo=0; foo<NBVAL; foo++) {
-    Serial.print(" ");
-    Serial.print(values[foo]);
-    }
-  Serial.print("\n");
-}
+  sprintf(ligne, "X %d %d %d %d",
+        values[0], values[1],values[2],values[3]);
+
+  Serial.println(ligne);
+}  
 /* -------------------------------------------------- */
 
 void loop() {