diff --git a/ReadMe.md b/ReadMe.md
index 36585d2..0e6be57 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -1,4 +1,4 @@
-# Manual to Make the Calibration Update
+# Manual to do the Calibration Update
 
 ## Changing the Range from 10 µA to 100 µA
 
@@ -51,7 +51,7 @@ MTB_UploadNewScale.py
 
 ### Procedure
 
-1. Enter the device serial number.
+1. Enter the device serial number (written on the back of your device).
 2. Depending on your country, enter the correct meanCount value:
    - 240 for Europe
    - 250 for the USA