diff --git a/htdocs/core/lib/pdf.lib.php b/htdocs/core/lib/pdf.lib.php
index 255d4dcf453..873b375496e 100644
--- a/htdocs/core/lib/pdf.lib.php
+++ b/htdocs/core/lib/pdf.lib.php
@@ -2247,13 +2247,11 @@ function pdf_getLinkedObjects(&$object, $outputlangs)
 		} elseif ($objecttype == 'commande' || $objecttype == 'supplier_order') {
 			$outputlangs->load('orders');
 
-			if (count($objects) > 1 && count($objects) <= (getDolGlobalInt("MAXREFONDOC") ? getDolGlobalInt("MAXREFONDOC") : 5)) {
-				$object->note_public .= dol_concatdesc($object->note_public, '<br>'.$outputlangs->transnoentities("RefOrder").' : <br>');
+			if (count($objects) > 1 && count($objects) <= (getDolGlobalInt("MAXREFONDOC") ? getDolGlobalInt("MAXREFONDOC") : 10)) {
+				$object->note_public = dol_concatdesc($object->note_public, '<br>'.$outputlangs->transnoentities("RefOrder").' : <br>');
 				foreach ($objects as $elementobject) {
-					$object->note_public .= dol_concatdesc($object->note_public, $outputlangs->transnoentities($elementobject->ref).($elementobject->ref_client ? ' ('.$elementobject->ref_client.')' : '').($elementobject->ref_supplier ? ' ('.$elementobject->ref_supplier.')' : '').' ');
-					$object->note_public .= dol_concatdesc($object->note_public, $outputlangs->transnoentities("OrderDate").' : ');
-					$object->note_public .= dol_concatdesc($object->note_public, dol_print_date($elementobject->date, 'day', '', $outputlangs));
-					$object->note_public .= dol_concatdesc($object->note_public, '<br>');
+					$object->note_public = dol_concatdesc($object->note_public, $outputlangs->transnoentities($elementobject->ref).($elementobject->ref_client ? ' ('.$elementobject->ref_client.')' : '').($elementobject->ref_supplier ? ' ('.$elementobject->ref_supplier.')' : '').' ');
+					$object->note_public = dol_concatdesc($object->note_public, $outputlangs->transnoentities("OrderDate").' : '.dol_print_date($elementobject->date, 'day', '', $outputlangs).'<br>');
 				}
 			} elseif (count($objects) == 1) {
 				$elementobject = array_shift($objects);
@@ -2283,8 +2281,11 @@ function pdf_getLinkedObjects(&$object, $outputlangs)
 
 			if (count($objects) > 1) {
 				$order = null;
-				if (empty($object->linkedObjects['commande']) && $object->element != 'commande') $object->note_public .= dol_concatdesc($object->note_public, '<br>'.$outputlangs->transnoentities("RefOrder").' / '.$outputlangs->transnoentities("RefSending").' : <br>');
-				else $object->note_public .= dol_concatdesc($object->note_public, '<br>'.$outputlangs->transnoentities("RefSending").' : <br>');
+				if (empty($object->linkedObjects['commande']) && $object->element != 'commande') {
+					$object->note_public = dol_concatdesc($object->note_public, '<br>'.$outputlangs->transnoentities("RefOrder").' / '.$outputlangs->transnoentities("RefSending").' : <br>');
+				} else {
+					$object->note_public = dol_concatdesc($object->note_public, '<br>'.$outputlangs->transnoentities("RefSending").' : <br>');
+				}
 				// We concat this record info into fields xxx_value. title is overwrote.
 				foreach ($objects as $elementobject) {
 					if (empty($object->linkedObjects['commande']) && $object->element != 'commande') {    // There is not already a link to order and object is not the order, so we show also info with order
@@ -2300,12 +2301,12 @@ function pdf_getLinkedObjects(&$object, $outputlangs)
 					}
 
 					if (! is_object($order)) {
-						$object->note_public .= dol_concatdesc($object->note_public, $outputlangs->transnoentities($elementobject->ref));
-						$object->note_public .= dol_concatdesc($object->note_public, '<br>');
+						$object->note_public = dol_concatdesc($object->note_public, $outputlangs->transnoentities($elementobject->ref));
+						$object->note_public = dol_concatdesc($object->note_public, '<br>');
 					} else {
-						$object->note_public .= dol_concatdesc($object->note_public, $outputlangs->convToOutputCharset($order->ref).($order->ref_client ? ' ('.$order->ref_client.')' : ''));
-						$object->note_public .= dol_concatdesc($object->note_public, ' / '.$outputlangs->transnoentities($elementobject->ref));
-						$object->note_public .= dol_concatdesc($object->note_public, '<br>');
+						$object->note_public = dol_concatdesc($object->note_public, $outputlangs->convToOutputCharset($order->ref).($order->ref_client ? ' ('.$order->ref_client.')' : ''));
+						$object->note_public = dol_concatdesc($object->note_public, ' / '.$outputlangs->transnoentities($elementobject->ref));
+						$object->note_public = dol_concatdesc($object->note_public, '<br>');
 					}
 				}
 			} elseif (count($objects) == 1) {
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);
 		}