diff --git a/htdocs/datapolicy/class/datapolicy.class.php b/htdocs/datapolicy/class/datapolicy.class.php
index a7ed08d7e6f..7d53020ce3a 100644
--- a/htdocs/datapolicy/class/datapolicy.class.php
+++ b/htdocs/datapolicy/class/datapolicy.class.php
@@ -269,11 +269,11 @@ class DataPolicy
 		$actionmsg = $langs->transnoentities('MailSentBy').' '.$from.' '.$langs->transnoentities('To').' '.$sendto;
 		if ($message) {
 			if ($sendtocc) {
-				 $actionmsg .= dol_concatdesc($actionmsg, $langs->transnoentities('Bcc').": ".$sendtocc);
+				 $actionmsg = dol_concatdesc($actionmsg, $langs->transnoentities('Bcc').": ".$sendtocc);
 			}
-			$actionmsg .= dol_concatdesc($actionmsg, $langs->transnoentities('MailTopic').": ".$subject);
-			$actionmsg .= dol_concatdesc($actionmsg, $langs->transnoentities('TextUsedInTheMessageBody').":");
-			$actionmsg .= dol_concatdesc($actionmsg, $message);
+			$actionmsg = dol_concatdesc($actionmsg, $langs->transnoentities('MailTopic').": ".$subject);
+			$actionmsg = dol_concatdesc($actionmsg, $langs->transnoentities('TextUsedInTheMessageBody').":");
+			$actionmsg = dol_concatdesc($actionmsg, $message);
 		}
 
 		// Send mail
@@ -343,11 +343,11 @@ class DataPolicy
 		$actionmsg = $langs->transnoentities('MailSentBy').' '.$from.' '.$langs->transnoentities('To').' '.$sendto;
 		if ($message) {
 			if ($sendtocc) {
-				$actionmsg .= dol_concatdesc($actionmsg, $langs->transnoentities('Bcc').": ".$sendtocc);
+				$actionmsg = dol_concatdesc($actionmsg, $langs->transnoentities('Bcc').": ".$sendtocc);
 			}
-			$actionmsg .= dol_concatdesc($actionmsg, $langs->transnoentities('MailTopic').": ".$subject);
-			$actionmsg .= dol_concatdesc($actionmsg, $langs->transnoentities('TextUsedInTheMessageBody').":");
-			$actionmsg .= dol_concatdesc($actionmsg, $message);
+			$actionmsg = dol_concatdesc($actionmsg, $langs->transnoentities('MailTopic').": ".$subject);
+			$actionmsg = dol_concatdesc($actionmsg, $langs->transnoentities('TextUsedInTheMessageBody').":");
+			$actionmsg = dol_concatdesc($actionmsg, $message);
 		}