diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/patroncards/image-manage.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/patroncards/image-manage.tt
index c7b9d207e3..077eaadc19 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/patroncards/image-manage.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/patroncards/image-manage.tt
@@ -175,10 +175,11 @@
 
         function selected_images() {
             var image_ids = new Array();
-            if (document.delete_images.image_id.length) {
-                for (i = 0; i < document.delete_images.image_id.length; i++) {
-                    if (document.delete_images.image_id[i].checked) {
-                        image_ids.push(document.delete_images.image_id[i].value);
+            let checkboxes = document.getElementsByName("image_id");
+            if (checkboxes.length) {
+                for (i = 0; i < checkboxes.length; i++) {
+                    if (checkboxes[i].checked) {
+                        image_ids.push(checkboxes[i].value);
                     }
                 }
             }