diff --git a/htdocs/admin/mails.php b/htdocs/admin/mails.php
index e86c78763ee..18b2f7d6e3d 100644
--- a/htdocs/admin/mails.php
+++ b/htdocs/admin/mails.php
@@ -833,23 +833,23 @@ if ($action == 'edit') {
 		if ($conf->global->MAIN_MAIL_SENDMODE == 'mail') {
 			if (!empty($conf->global->MAIN_EXTERNAL_MAIL_SPF_STRING_TO_ADD)) {
 				// List of string to add in SPF if the setup use the mail method. Example 'include:sendgrid.net include:spf.mydomain.com'
-				$text .= ($text ? '<br><br>' : '').$langs->trans("WarningPHPMailSPF", $conf->global->MAIN_EXTERNAL_MAIL_SPF_STRING_TO_ADD);
+				$text .= ($text ? '<br><br>' : '').'<!-- MAIN_EXTERNAL_MAIL_SPF_STRING_TO_ADD -->'.$langs->trans("WarningPHPMailSPF", $conf->global->MAIN_EXTERNAL_MAIL_SPF_STRING_TO_ADD);
 			} else {
 				// MAIN_EXTERNAL_SMTP_CLIENT_IP_ADDRESS is list of IPs where email is sent from. Example: '1.2.3.4, [aaaa:bbbb:cccc:dddd]'.
 				if (!empty($conf->global->MAIN_EXTERNAL_SMTP_CLIENT_IP_ADDRESS)) {
 					// List of IP show as record to add in SPF if we use the mail method
-					$text .= ($text ? '<br><br>' : '').$langs->trans("WarningPHPMailSPF", $conf->global->MAIN_EXTERNAL_SMTP_CLIENT_IP_ADDRESS);
+					$text .= ($text ? '<br><br>' : '').'<!-- MAIN_EXTERNAL_SMTP_CLIENT_IP_ADDRESS -->'.$langs->trans("WarningPHPMailSPF", $conf->global->MAIN_EXTERNAL_SMTP_CLIENT_IP_ADDRESS);
 				}
 			}
 		} else {
 			if (!empty($conf->global->MAIN_EXTERNAL_SMTP_CLIENT_IP_ADDRESS)) {
 				// List of IP show as record to add as allowed IP if we use the smtp method. Value is '1.2.3.4, [aaaa:bbbb:cccc:dddd]'
 				// TODO Add a key to allow to show the IP/name of server detected dynamically
-				$text .= ($text ? '<br><br>' : '').$langs->trans("WarningPHPMail2", $conf->global->MAIN_EXTERNAL_SMTP_CLIENT_IP_ADDRESS);
+				$text .= ($text ? '<br><br>' : '').'<!-- MAIN_EXTERNAL_SMTP_CLIENT_IP_ADDRESS -->'.$langs->trans("WarningPHPMail2", $conf->global->MAIN_EXTERNAL_SMTP_CLIENT_IP_ADDRESS);
 			}
 			if (!empty($conf->global->MAIN_EXTERNAL_SMTP_SPF_STRING_TO_ADD)) {	// Should be required only if you have preset the Dolibarr to use your own SMTP and you want to warn users to update their domain name to match your SMTP server.
 				// List of string to add in SPF if we use the smtp method. Example 'include:spf.mydomain.com'
-				$text .= ($text ? '<br><br>' : '').$langs->trans("WarningPHPMailSPF", $conf->global->MAIN_EXTERNAL_SMTP_SPF_STRING_TO_ADD);
+				$text .= ($text ? '<br><br>' : '').'<!-- MAIN_EXTERNAL_SMTP_SPF_STRING_TO_ADD -->'.$langs->trans("WarningPHPMailSPF", $conf->global->MAIN_EXTERNAL_SMTP_SPF_STRING_TO_ADD);
 			}
 		}
 
diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index 58b21ca3554..af1c226276b 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -497,7 +497,7 @@ WarningPHPMailB=- Some Email Service Providers (like Yahoo) do not allow you to
 WarningPHPMailC=- Using the SMTP server of your own Email Service Provider to send emails is also interesting so all emails sent from application will also be saved into your "Sent" directory of your mailbox.
 WarningPHPMailD=Also, it is therefore recommended to change the sending method of e-mails to the value "SMTP". If you really want to keep the default "PHP" method to send emails, just ignore this warning, or remove it by setting the MAIN_HIDE_WARNING_TO_ENCOURAGE_SMTP_SETUP constant to 1 in Home - Setup - Other.
 WarningPHPMail2=If your email SMTP provider need to restrict email client to some IP addresses (very rare), this is the IP address of the mail user agent (MUA) for your ERP CRM application: <strong>%s</strong>.
-WarningPHPMailSPF=If the domain name in your sender email address is protected by a SPF record (ask you domain name registar), you must add the following IPs in the SPF record of the DNS of your domain: <strong>%s</strong>.
+WarningPHPMailSPF=If the domain name in your sender email address is protected by a SPF record (ask your domain name registar), you must add the following IPs in the SPF record of the DNS of your domain: <strong>%s</strong>.
 ClickToShowDescription=Click to show description
 DependsOn=This module needs the module(s)
 RequiredBy=This module is required by module(s)