diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index 5887f6cde4a..c99c436915d 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -1687,7 +1687,7 @@ AGENDA_SHOW_LINKED_OBJECT=Show linked object into agenda view
 ##### Clicktodial #####
 ClickToDialSetup=Click To Dial module setup
 ClickToDialUrlDesc=Url called when a click on phone picto is done.  In URL, you can use tags<br><b>__PHONETO__</b> that will be replaced with the phone number of person to call<br><b>__PHONEFROM__</b> that will be replaced with phone number of calling person (yours)<br><b>__LOGIN__</b> that will be replaced with clicktodial login (defined on user card)<br><b>__PASS__</b> that will be replaced with clicktodial password (defined on user card).
-ClickToDialDesc=This module makea phone numbers clickable links. A click on the icon will make your phone call the number. This can be used to call a call-center system from Dolibarr that can call the phone number on a SIP system for example.
+ClickToDialDesc=This module change phone numbers, when using a desktop computer, into clickable links. A click will call the number. This can be used to start the phone call when using a soft phone on your desktop or when using a CTI system based on SIP protocol for example. Note: When using a smartphone, phone numbers are always clickable.
 ClickToDialUseTelLink=Use just a link "tel:" on phone numbers
 ClickToDialUseTelLinkDesc=Use this method if your users have a softphone or a software interface installed on the same computer as the browser, and called when you click on a link in your browser that starts with "tel:". If you need a full server solution (no need of local software installation), you must set this to "No" and fill next field.
 ##### Point Of Sale (CashDesk) #####