diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index c9681ba7174c1..10d5015de8843 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -13350,7 +13350,7 @@ function show_actions_messaging($conf, $langs, $db, $filterobj, $objcon = '', $n
 				&& $actionstatic->code != 'AC_TICKET_CREATE'
 				&& $actionstatic->code != 'AC_TICKET_MODIFY'
 			) {
-				$out .= '<div class="timeline-body" >';
+				$out .= '<div class="timeline-body" style="word-wrap: break-word; word-break: break-all;" >';
 				$truncateLines = getDolGlobalInt('MAIN_TRUNCATE_TIMELINE_MESSAGE', 3);
 				$truncatedText = dolGetFirstLineOfText($histo[$key]['message'], $truncateLines);
 				if ($truncateLines > 0 && strlen($histo[$key]['message']) > strlen($truncatedText)) {