diff --git a/public/js/index.js b/public/js/index.js
index a31cf153c..bfc155d2f 100644
--- a/public/js/index.js
+++ b/public/js/index.js
@@ -1824,7 +1824,7 @@ function cancelStopwatch() {
 }
 
 function timeAddManual() {
-    $('.mini.modal')
+    $('.time-add-manual')
         .modal({
             duration: 200,
             onApprove: function() {
diff --git a/templates/repo/issue/view_content/sidebar.tmpl b/templates/repo/issue/view_content/sidebar.tmpl
index 18fceb5c3..b966a0deb 100644
--- a/templates/repo/issue/view_content/sidebar.tmpl
+++ b/templates/repo/issue/view_content/sidebar.tmpl
@@ -149,7 +149,7 @@
 							<div class="ui buttons two fluid start-add">
 								<button onclick="this.disabled=true;toggleStopwatch()" class="ui button poping up start" data-content='{{.i18n.Tr "repo.issues.start_tracking"}}' data-position="top center" data-variation="small inverted">{{.i18n.Tr "repo.issues.start_tracking_short"}}</button>
 								<button onclick="timeAddManual()" class="ui button green poping up add-time" data-content='{{.i18n.Tr "repo.issues.add_time"}}' data-position="top center" data-variation="small inverted">{{.i18n.Tr "repo.issues.add_time_short"}}</button>
-								<div class="ui mini modal">
+								<div class="ui mini modal time-add-manual">
 									<div class="header">{{.i18n.Tr "repo.issues.add_time"}}</div>
 									<div class="content">
 										<form method="POST" id="add_time_manual_form" action="{{$.RepoLink}}/issues/{{.Issue.Index}}/times/add" class="ui action input fluid">