diff --git a/twins/arduino-serialreader/arduino-serialreader.ino b/twins/arduino_serialreader/arduino_serialreader.ino
similarity index 98%
rename from twins/arduino-serialreader/arduino-serialreader.ino
rename to twins/arduino_serialreader/arduino_serialreader.ino
index f6bcc86..1107fbf 100755
--- a/twins/arduino-serialreader/arduino-serialreader.ino
+++ b/twins/arduino_serialreader/arduino_serialreader.ino
@@ -39,8 +39,8 @@ void setup() {
     /* digitalWrite(led, LOW); */
     /* digitalWrite(led_com, LOW); */
 
-    Serial.begin(115200);   // Moniteur serie
- }
+    Serial.begin(115200);   // Liaison série
+}
 
 /******************************************************************************
  * Boucle principale
diff --git a/twins/microbit-serialreader.py b/twins/microbit_serialreader.py
similarity index 100%
rename from twins/microbit-serialreader.py
rename to twins/microbit_serialreader.py