diff --git a/templates/cms/media.html b/templates/cms/media.html
index 998db8f..90b0a7d 100644
--- a/templates/cms/media.html
+++ b/templates/cms/media.html
@@ -11,7 +11,7 @@
 
 <meta property="og:title" content="{{media_object.title}} - {{PORTAL_NAME}}">
 <meta property="og:url" content="{{FRONTEND_HOST}}{{media_object.get_absolute_url}}">
-<meta property="og:description" content="{% if media_object.summary %}{{media_object.summary}}{% else %}{{media_object.description}}{% endif %}">
+<meta property="og:description" content="{% if media_object.summary %}{{media_object.summary|truncatechars:300}}{% else %}{{media_object.description|truncatechars:300}}{% endif %}">
 <meta property="og:updated_time" content="{{media_object.edit_date}}">
 
 {% if media_object.media_type == "video" %}