millis() issue

[rei-vilo]

The basic sketch listed below prints millis() every second. However, output is different.

*** /Users/ReiVilo/Documents/Projets/Energia/BasicLED/BasicPrint/BasicPrint.ino
--- 509
--- 693
--- 693
--- 693
--- 694
--- 694

• Basic sketch with millis()

void setup()
{
    Serial.begin(115200);
    delay(500);
    Serial.print("*** ");
    Serial.println(__FILE__);
}

void loop()
{
    Serial.print("--- ");
    Serial.println(millis());
    delay(2000);
}