diff --git a/Debug-Serial.md b/Debug-Serial.md
index dfea561..32cb737 100644
--- a/Debug-Serial.md
+++ b/Debug-Serial.md
@@ -1,4 +1,4 @@
-Debug Serial will allow you to get information from the board as Human readable ASCII output to:
+Debug Serial can be enabled with DEBUG_SERIAL_USART parameter and will allow you to get information from the board as Human readable ASCII output to:
 * Calibrate the battery voltage reading
 * Calibrate the temperature reading
 * See input Calibration results