diff --git a/ChangeLog b/ChangeLog
index 2e86e0f7279..d6caeca60c3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -19,6 +19,7 @@ Fix: [ bug #1162 ] Translaction for morning and afternoon
 Fix: [ bug #1161 ] Search on product label
 Fix: [ bug #1075 ] POS module doesn't decrement stock of products in delayed payment mode.
 Fix: [ bug #1171 ] Documents lost in interventions after validating
+Fix: fix unsubscribe URL into mailing when sending manually (not by script)
 
 ***** ChangeLog for 3.4.1 compared to 3.4.0 *****
 Fix: Display buying price on line edit when no supplier price is defined
diff --git a/htdocs/comm/mailing/fiche.php b/htdocs/comm/mailing/fiche.php
index 88ee011bf8f..c3f87e6e4e8 100644
--- a/htdocs/comm/mailing/fiche.php
+++ b/htdocs/comm/mailing/fiche.php
@@ -221,8 +221,8 @@ if ($action == 'sendallconfirmed' && $confirm == 'yes')
 					$substitutionarray=array(
 							'__ID__' => $obj->source_id,
 							'__EMAIL__' => $obj->email,
-							'__CHECK_READ__' => '<img src="'.DOL_MAIN_URL_ROOT.'/public/emailing/mailing-read.php?tag='.$obj->tag.'" width="1" height="1" style="width:1px;height:1px" border="0"/>',
-							'__UNSUBSCRIBE__' => '<a href="'.DOL_MAIN_URL_ROOT.'/public/emailing/mailing-unsubscribe.php?tag='.$obj->tag.'&unsuscrib=1" target="_blank">'.$langs->trans("MailUnsubcribe").'</a>',
+							'__CHECK_READ__' => '<img src="'.DOL_MAIN_URL_ROOT.'/public/emailing/mailing-read.php?tag='.$obj->tag.'&securitykey='.urlencode($conf->global->MAILING_EMAIL_UNSUBSCRIBE_KEY).'" width="1" height="1" style="width:1px;height:1px" border="0"/>',
+							'__UNSUBSCRIBE__' => '<a href="'.DOL_MAIN_URL_ROOT.'/public/emailing/mailing-unsubscribe.php?tag='.$obj->tag.'&unsuscrib=1&securitykey='.urlencode($conf->global->MAILING_EMAIL_UNSUBSCRIBE_KEY).'" target="_blank">'.$langs->trans("MailUnsubcribe").'</a>',
 							'__MAILTOEMAIL__' => '<a href="mailto:'.$obj->email.'">'.$obj->email.'</a>',
 							'__LASTNAME__' => $obj->lastname,
 							'__FIRSTNAME__' => $obj->firstname,