diff --git a/assets/js/utils/calendar_default_view.js b/assets/js/utils/calendar_default_view.js
index 8677010e0a..025a059eee 100755
--- a/assets/js/utils/calendar_default_view.js
+++ b/assets/js/utils/calendar_default_view.js
@@ -734,7 +734,7 @@ App.Utils.CalendarDefaultView = (function () {
 
         $target.popover({
             placement: 'top',
-            title: info.event.title,
+            title: App.Utils.String.escapeHtml(info.event.title),
             content: $html,
             html: true,
             container: '#calendar',
diff --git a/assets/js/utils/calendar_table_view.js b/assets/js/utils/calendar_table_view.js
index e9b025af3d..28cacadc52 100755
--- a/assets/js/utils/calendar_table_view.js
+++ b/assets/js/utils/calendar_table_view.js
@@ -1406,7 +1406,7 @@ App.Utils.CalendarTableView = (function () {
 
         $target.popover({
             placement: 'top',
-            title: info.event.title,
+            title: App.Utils.String.escapeHtml(info.event.title),
             content: $html,
             html: true,
             container: '#calendar',