diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/erm/erm.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/erm/erm.tt
index 433cff377a..74d638cc5b 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/erm/erm.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/erm/erm.tt
@@ -41,15 +41,11 @@
 
         const max_allowed_packet = [% To.json(max_allowed_packet) | $raw %];
 
-        let logged_in_user_lists = [];
+        [% SET logged_in_user_lists_data = [] %]
         [% FOR shelf IN logged_in_user.virtualshelves %]
-            logged_in_user_lists.push(
-                {
-                    id: "[% shelf.shelfnumber | html %]",
-                    name: "[% shelf.shelfname | html %]",
-                }
-            );
+            [% logged_in_user_lists_data.push( { id => shelf.shelfnumber.html, name => shelf.shelfname.html } ) %]
         [% END %]
+        const logged_in_user_lists = [% To.json(logged_in_user_lists_data) | $raw %];
 
         const logged_in_user = [% To.json(logged_in_user.unblessed) | $raw %];
     </script>