diff --git a/_layouts/base_slides.html b/_layouts/base_slides.html
index 8c404aebe405fc..73d5274023dc94 100644
--- a/_layouts/base_slides.html
+++ b/_layouts/base_slides.html
@@ -40,8 +40,8 @@
         {%- elsif page.tags contains "galaxy" %}{% assign coverimage = "/assets/images/GalaxyNews.png" %}
         {%- elsif page.tags contains "gat" %}{% assign coverimage = "/assets/images/gat.png" %}
         {%- else %}{% assign coverimage = "/assets/images/GTNLogo1000.png" %}{% endif %}
-        {% assign og_image = page.og_image | default: coverimage | default: topic.og_image | default: "/assets/images/GTNLogo1000.png" %}
-        <meta property="og:image" content="{{ og_image | prepend: site.baseurl }}">
+        {% assign og_image = page.og_image | default: page['cover-image'] | default: topic.og_image | default: coverimage | default: "assets/images/GTNLogo1000.png" %}
+	<meta property="og:image" content="{% if og_image contains 'https://' %}{{ og_image }}{% else %}{{ site.url }}{{ site.baseurl }}/{{ og_image }}{% endif %}">
 
         <script type="application/ld+json">
             {% include _includes/material.jsonld material=page topic=topic site=site %}