diff --git a/youtube/templates/base.html b/youtube/templates/base.html
index 39f8d2b..d0d7959 100644
--- a/youtube/templates/base.html
+++ b/youtube/templates/base.html
@@ -1,9 +1,14 @@
+{% if settings.app_public %}
+    {% set app_url = settings.app_url|string %}
+{% else %}
+    {% set app_url = settings.app_url|string + ':' + settings.port_number|string %}
+{% endif %}
 <!DOCTYPE html>
 <html lang="en">
     <head>
         <meta charset="UTF-8"/>
         <meta name="viewport" content="width=device-width, initial-scale=1"/>
-        <meta http-equiv="Content-Security-Policy" content="default-src 'self' 'unsafe-inline' 'unsafe-eval'; media-src 'self' blob: data: https://*.googlevideo.com;  {{ "img-src 'self' https://*.googleusercontent.com https://*.ggpht.com https://*.ytimg.com;" if not settings.proxy_images else "" }}">
+        <meta http-equiv="Content-Security-Policy" content="default-src 'self' 'unsafe-inline' 'unsafe-eval'; media-src 'self' blob: {{ app_url }}/* data: https://*.googlevideo.com;  {{ "img-src 'self' https://*.googleusercontent.com https://*.ggpht.com https://*.ytimg.com;" if not settings.proxy_images else "" }}">
         <title>{{ page_title }}</title>
         <link title="YT Local" href="/youtube.com/opensearch.xml" rel="search" type="application/opensearchdescription+xml"/>
         <link href="/youtube.com/static/favicon.ico" type="image/x-icon" rel="icon"/>
