diff --git a/libretube-theme/templates/base.html b/libretube-theme/templates/base.html
index 0186285..c2c3b8f 100644
--- a/libretube-theme/templates/base.html
+++ b/libretube-theme/templates/base.html
@@ -1,6 +1,6 @@
 <!DOCTYPE html>
 <html lang="{% block html_lang %}{{ DEFAULT_LANG }}{% endblock %}">
-    <head prefix="og: https://ogp.me/ns/{% if article %}video{% endif %}#"{% if article %} itemscope itemtype="https://schema.org/VideoObject"{% endif %}>
+    <head prefix="og: https://ogp.me/ns{% if article %}/video{% endif %}#"{% if article %} itemscope itemtype="https://schema.org/VideoObject"{% endif %}>
         {% block head %}
             <!-- Meta Base -->
             <meta charset="UTF-8"/>
