diff --git a/public/src/forum/topic.js b/public/src/forum/topic.js
index 418d7ea4c2..9923c04d2a 100644
--- a/public/src/forum/topic.js
+++ b/public/src/forum/topic.js
@@ -933,7 +933,7 @@ define(['composer', 'forum/pagination'], function(composer, pagination) {
 			thread_state.deleted = deleted ? '1' : '0';
 
 			if(deleted) {
-				$('<div id="thread-deleted">This thread has been deleted. Only users with thread management privileges can see it.</div>').insertBefore(threadEl);
+				$('<div id="thread-deleted" class="alert alert-warning">This thread has been deleted. Only users with thread management privileges can see it.</div>').insertBefore(threadEl);
 			} else {
 				$('#thread-deleted').remove();
 			}