diff --git a/g1sms/Readme.md b/g1sms/Readme.md
index 16538ed..a6e2daf 100644
--- a/g1sms/Readme.md
+++ b/g1sms/Readme.md
@@ -25,8 +25,9 @@ To help finding where to apply patches a convenient way is to use the ```$ASTROP
 Adapt to _YOUR_COUNTRY_CODE_
 
 ```
-cd $ASTROPORT/astroport/g1sms
-search '\+33' '\+_YOUR_COUNTRY_CODE'
+  To replace "\+33" whith "\+_YOUR_COUNTRY_CODE_", please run
+  grep -rl '\+33' ./  | xargs sed -i 's/\+33/\+_YOUR_COUNTRY_CODE_/g'
+
 ```
 # TODO's