diff --git a/seahub/templates/sysadmin/sys_repo_trash.html b/seahub/templates/sysadmin/sys_repo_trash.html
index f15dc6d28c..e274ccffd2 100644
--- a/seahub/templates/sysadmin/sys_repo_trash.html
+++ b/seahub/templates/sysadmin/sys_repo_trash.html
@@ -21,7 +21,7 @@
 </div>
 
 {% if repos %}
-<p class="tip">{% trans "Tip: libraries deleted 30 days before will be cleaned automatically."%}</p>
+<p class="tip">{% trans "Tip: libraries deleted 30 days ago will be cleaned automatically."%}</p>
 <table class="repo-list">
     <tr>
         <th width="4%"><!--icon--></th>