diff --git a/lib/form/filemanager.js b/lib/form/filemanager.js
index a904d451a6e..fcfc067ed33 100644
--- a/lib/form/filemanager.js
+++ b/lib/form/filemanager.js
@@ -784,6 +784,9 @@ M.form_filemanager.init = function(Y, options) {
                 node.one('.fp-dlg-butcancel').on('click', handle_cancel, this);
             }
             this.confirm_dlg.dlgopt = dialog_options;
+            if (typeof dialog_options.header != 'undefined') {
+                this.confirm_dlg.set('headerContent', dialog_options.header);
+            }
             this.confirm_dlg_node.one('.fp-dlg-text').setContent(dialog_options.message);
             this.confirm_dlg.show();
         },
@@ -818,10 +821,12 @@ M.form_filemanager.init = function(Y, options) {
             }, this);
             selectnode.one('.fp-file-delete').on('click', function(e) {
                 e.preventDefault();
-                var dialog_options = {};
+                var dialog_options = {
+                    scope: this,
+                    header: M.util.get_string('confirm', 'moodle'),
+                };
                 var params = {};
                 var fileinfo = this.selectui.fileinfo;
-                dialog_options.scope = this;
                 params.filepath = fileinfo.filepath;
                 if (fileinfo.type == 'folder') {
                     params.filename = '.';
diff --git a/repository/tests/behat/behat_filepicker.php b/repository/tests/behat/behat_filepicker.php
index 368dcb49dab..b6f09d675f6 100644
--- a/repository/tests/behat/behat_filepicker.php
+++ b/repository/tests/behat/behat_filepicker.php
@@ -171,9 +171,7 @@ class behat_filepicker extends behat_base {
         $this->perform_on_element('delete', $exception);
 
         // Yes, we are sure.
-        // Using xpath + click instead of pressButton as 'Ok' it is a common string.
-        $okbutton = $this->find('css', 'div.fp-dlg button.fp-dlg-butconfirm');
-        $okbutton->click();
+        $this->execute('behat_general::i_click_on_in_the', [get_string('ok'), 'button', get_string('confirm'), 'dialogue']);
     }
 
     /**