diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/basketgroup.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/basketgroup.tt
index 153d0e8d90..ba83451cf2 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/basketgroup.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/acqui/basketgroup.tt
@@ -410,7 +410,9 @@
 
         function closeandprint(bg){
             if(document.location = '/cgi-bin/koha/acqui/basketgroup.pl?op=closeandprint&basketgroupid=' + bg ){
-                setTimeout("window.location.reload();", 3000);
+                setTimeout(() => {
+                    window.location.reload();
+                }, 3000);
             } else {
                 alert( _("Error downloading the file") );
             }
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/virtualshelves/shelves.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/virtualshelves/shelves.tt
index 52069f4ed1..ed1323169c 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/virtualshelves/shelves.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/virtualshelves/shelves.tt
@@ -640,7 +640,9 @@
                 window.onafterprint = function () {
                     window.close();
                 };
-                setTimeout("window.close()", 1000); // Hack for Chrome < 63
+                setTimeout(() => {
+                    window.close();
+                }, 1000); // Hack for Chrome < 63
             });
         </script>
     [% END #/print %]
diff --git a/koha-tmpl/opac-tmpl/bootstrap/js/basket.js b/koha-tmpl/opac-tmpl/bootstrap/js/basket.js
index 0f12addf84..e4a9c5f5ae 100644
--- a/koha-tmpl/opac-tmpl/bootstrap/js/basket.js
+++ b/koha-tmpl/opac-tmpl/bootstrap/js/basket.js
@@ -209,7 +209,7 @@ function showCartUpdate(msg) {
     // set body of popup window
     $("#cartDetails").html(msg);
     showCart();
-    setTimeout("hideCart()", 2000);
+    setTimeout(hideCart, 2000);
 }
 
 function showListsUpdate(msg) {