diff --git a/koha-tmpl/opac-tmpl/bootstrap/en/modules/opac-addbybiblionumber.tt b/koha-tmpl/opac-tmpl/bootstrap/en/modules/opac-addbybiblionumber.tt
index 81edb61441..bc23bdd60a 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/en/modules/opac-addbybiblionumber.tt
+++ b/koha-tmpl/opac-tmpl/bootstrap/en/modules/opac-addbybiblionumber.tt
@@ -12,9 +12,9 @@
                         [% IF ( authorized ) %]
                             [% UNLESS ( newshelf ) %]
                                 [% IF ( multiple ) %]
-                                    <h1>Add [% total %] items to [% IF ( singleshelf ) %]<em>[% shelfname %]</em>: [% ELSE %]a list:[% END %]</h1>
+                                    <h1>Add [% total %] items to [% IF ( singleshelf ) %]<em>[% shelfname | html %]</em>: [% ELSE %]a list:[% END %]</h1>
                                 [% ELSE %]
-                                    <h1>Add to [% IF ( singleshelf ) %]<em>[% shelfname %]</em>[% ELSE %]a list:[% END %]</h1>
+                                    <h1>Add to [% IF ( singleshelf ) %]<em>[% shelfname | html %]</em>[% ELSE %]a list:[% END %]</h1>
                                 [% END %]
                                 <ul>
                                     [% FOREACH biblio IN biblios %]