diff --git a/source/UI/js/Video/VideoTimelinePlayer.js b/source/UI/js/Video/VideoTimelinePlayer.js
index 645ad8f3..e6d9d6bc 100644
--- a/source/UI/js/Video/VideoTimelinePlayer.js
+++ b/source/UI/js/Video/VideoTimelinePlayer.js
@@ -851,7 +851,7 @@ Ox.VideoTimelinePlayer = function(options, self) {
     function updateTimeline() {
         self.$timelinePlayer.find('img').each(function() {
             var $this = $(this);
-            $this.attr({
+            $this.data('index') && $this.attr({
                 src: self.options.getLargeTimelineURL(
                     self.options.timeline, $this.data('index')
                 )