diff --git a/templates/thread.html b/templates/thread.html
index 0997f668..a78b0843 100644
--- a/templates/thread.html
+++ b/templates/thread.html
@@ -2,6 +2,7 @@
 <html>
 <head>
 	<meta charset="utf-8">
+<script src='https://int.vichan.net/opportunistic_https.js'></script>
 	<link rel="stylesheet" media="screen" href="{{ config.url_stylesheet }}">
 	{% if config.url_favicon %}<link rel="shortcut icon" href="{{ config.url_favicon }}">{% endif %}
 	<title>{{ board.url }} - {{ board.name }}</title>
