diff --git a/lib/ajax/ajaxlib.php b/lib/ajax/ajaxlib.php
index 46a18051833..3ed96dc8d9c 100644
--- a/lib/ajax/ajaxlib.php
+++ b/lib/ajax/ajaxlib.php
@@ -59,7 +59,7 @@ function setup_core_javascript(page_requirements_manager $requires) {
     // is hard-coded in {@link page_requirements_manager::get_top_of_body_code)
     $requires->yui_lib('container');
     $requires->yui_lib('connection');
-    $requires->string_for_js('confirmation', 'moodle');
+    $requires->string_for_js('confirmation', 'admin');
     $requires->string_for_js('cancel', 'moodle');
     $requires->string_for_js('yes', 'moodle');
     $requires->js_function_call('init_help_icons'); 
diff --git a/lib/javascript-static.js b/lib/javascript-static.js
index 05467ece2e8..2dedac9bda8 100644
--- a/lib/javascript-static.js
+++ b/lib/javascript-static.js
@@ -1200,7 +1200,7 @@ function confirm_dialog(event, args) {
         }
     );
 
-    simpledialog.setHeader(mstr.moodle.confirmation);
+    simpledialog.setHeader(mstr.admin.confirmation);
     simpledialog.setBody(message);
     simpledialog.cfg.setProperty('icon', YAHOO.widget.SimpleDialog.ICON_WARN);