diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index fbbdf81ff93..1daec4b0001 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -1992,7 +1992,7 @@ ImportSetup=Setup of module Import
 InstanceUniqueID=Unique ID of the instance
 SmallerThan=Smaller than
 LargerThan=Larger than
-IfTrackingIDFoundEventWillBeLinked=Note that If a tracking ID is found into incoming email, the event will be automatically linked to the related objects.
+IfTrackingIDFoundEventWillBeLinked=Note that If a tracking ID of an object is found into incoming email, or if the email is an answer of an email aready collected and linked to an object, the event will be automatically linked to the known related object too.
 WithGMailYouCanCreateADedicatedPassword=With a GMail account, if you enabled the 2 steps validation, it is recommanded to create a dedicated second password for the application instead of using your own account passsword from https://myaccount.google.com/.
 EmailCollectorTargetDir=It may be a desired behaviour to move the email into another tag/directory when it was processed successfully. Just set name of directory here to use this feature (Do NOT use special characters in name). Note that you must also use a read/write login account.
 EmailCollectorLoadThirdPartyHelp=You can use this action to use the email content to find and load an existing thirdparty in your database. The found (or created) thirdparty will be used for following actions that need it. In the parameter field you can use for example 'EXTRACT:BODY:Name:\s([^\s]*)' if you want to extract the name of the thirdparty from a string 'Name: name to find' found into the body.