diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/catalogue/detail.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/catalogue/detail.tt
index 010cbd0c31..b19d8dc599 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/catalogue/detail.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/catalogue/detail.tt
@@ -1379,7 +1379,7 @@ Note that permanent location is a code, and location may be an authval.
             });
         [% ELSE %]
             $(window).load(function() {
-                verify_cover_images;
+                verify_cover_images();
             });
         [% END %]
     </script>