diff --git a/media/css/seahub.css b/media/css/seahub.css
index a5d2b5ca28..4639d26172 100644
--- a/media/css/seahub.css
+++ b/media/css/seahub.css
@@ -835,8 +835,8 @@ ul.with-bg li {
     margin-top:8px;
 }
 /* repo-history */
-#history-back-to-repo {
-    margin-top:5px;
+#back {
+    margin-top:3px;
 }
 .commit-list {
     margin:0 0 20px;
diff --git a/templates/repo_view_snapshot.html b/templates/repo_view_snapshot.html
index 7400161882..7d57d99551 100644
--- a/templates/repo_view_snapshot.html
+++ b/templates/repo_view_snapshot.html
@@ -5,7 +5,7 @@
 {% block main_panel %}
 <div class="w100 ovhd">
     <h2 class="fleft">{{repo.props.name}} 镜像查看</h2>
-    <button data="{{ SITE_ROOT }}repo/history/{{ repo.props.id }}/" class="fright" id="history-back-to-repo">返回修改历史</button>
+    <button data="{{ SITE_ROOT }}repo/history/{{ repo.props.id }}/" class="fright" id="back">返回修改历史</button>
 </div>
 
 <div class="commit-list-outer-container">
@@ -78,7 +78,7 @@
 {% block extra_script %}
 <script type="text/javascript">
     {% include 'snippets/list_commit_detail.html' %}
-    $('#history-back-to-repo').click(function() {
+    $('#back').click(function() {
         location.href = $(this).attr('data');
     });
     addConfirmTo($(".repo-revert"), '确定要还原该目录？');