diff --git a/module/block/view/todoblock.html.php b/module/block/view/todoblock.html.php
index 18562676dd..0a4db67169 100644
--- a/module/block/view/todoblock.html.php
+++ b/module/block/view/todoblock.html.php
@@ -22,7 +22,7 @@ if(!$selfCall) die(include('./todolist.html.php'));
 .block-todoes .todoes > li {position: relative; padding: 5px 10px 5px 35px; list-style: none; white-space:nowrap; overflow: auto; overflow-x:hidden;}
 .block-todoes .todoes > li:hover {background-color: #e9f2fb;}
 .block-todoes .todo-title {padding: 5px 15px 5px 5px;}
-.titleBox {width: 700px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block;}
+.titleBox {max-width: 700px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block;}
 .block-todoes .todo-pri {margin: 0 5px;}
 .block-todoes .todo-time {display: inline-block; padding: 0 5px; font-size: 12px; color: #8e939a; width: 95px;}
 .block-todoes .todo-check {position: absolute; top: 5px; left: 10px; display: block; width: 20px; height: 20px; font-size: 20px; color: transparent; cursor: pointer; background: #fff; border: 2px solid #eee; border-radius: 50%;}