diff --git a/app/views/catalog/_facsimile.html.erb b/app/views/catalog/_facsimile.html.erb
index 43e1085d..e4364f13 100644
--- a/app/views/catalog/_facsimile.html.erb
+++ b/app/views/catalog/_facsimile.html.erb
@@ -44,5 +44,5 @@
 
 
 </script>
-<script src="http://static.kb.dk/kbOpenSeadragon/2.5.0/js/KbOSD_bundle_min.js"></script>
+<script src="https://static.kb.dk/kbOpenSeadragon/2.5.0/js/KbOSD_bundle_min.js"></script>