diff --git a/templates/macros.html b/templates/macros.html
index e9a91ea83a17faec91c2cb521db7bb71e9e6b45b..eb5e7c1b947d5c633d72d76a0dd14f8fe81d80d9 100644
--- a/templates/macros.html
+++ b/templates/macros.html
@@ -168,7 +168,7 @@ $('#embedcodebtn').popover(
 {% macro lecture_list_item(lecture,videos,global_permissions) %}
 <li class="list-group-item" id="lecture-{{lecture.id}}">
 	<div class="row">
-		<div style="background-image: url('{{ config.VIDEOPREFIX }}/thumbnail/l_{{lecture.id}}.jpg')" class="col-sm-2 col-xs-12 thumbnailimg">
+		<div style="background-image: url('{{ config.VIDEOPREFIX }}/thumbnail/l_{{lecture.id}}.jpg')" class="col-sm-2 col-xs-12 thumbnailimg" onerror="this.src='{{url_for('static',filename='no-thumbnail.png')}}'; this.onerror=''; ">
 		{% if not videos|length is equalto 0 %}
 			<a href="{{url_for('lecture', course=lecture.course.handle, id=lecture.id)}}">
 				<span class="glyphicon glyphicon-play-circle playpreviewbtn"></span>