diff --git a/public/src/forum/topic.js b/public/src/forum/topic.js
index bae43ba3c1..d6fd2a697c 100644
--- a/public/src/forum/topic.js
+++ b/public/src/forum/topic.js
@@ -255,6 +255,9 @@ define(['forum/pagination', 'forum/topic/threadTools', 'forum/topic/postTools',
 			} else if(!user.length && data.online) {
 				user = createUserIcon(data.uid, data.picture, data.userslug, data.username);
 				activeEl.append(user);
+				activeEl.find('a[data-uid] img').tooltip({
+					placement: 'top'
+				});
 			}
 		}