diff --git a/notes/externallib.php b/notes/externallib.php
index 98f9985b6df..f8aa20d982c 100644
--- a/notes/externallib.php
+++ b/notes/externallib.php
@@ -226,7 +226,7 @@ class core_notes_external extends external_api {
         global $CFG;
         require_once($CFG->dirroot . "/notes/lib.php");
 
-        $params = self::validate_parameters(self::delete_notes_parameters(), $notes);
+        $params = self::validate_parameters(self::delete_notes_parameters(), array('notes' => $notes));
 
         // Check if note system is enabled.
         if (!$CFG->enablenotes) {
@@ -295,7 +295,7 @@ class core_notes_external extends external_api {
         global $CFG;
         require_once($CFG->dirroot . "/notes/lib.php");
 
-        $params = self::validate_parameters(self::get_notes_parameters(), $notes);
+        $params = self::validate_parameters(self::get_notes_parameters(), array('notes' => $notes));
         // Check if note system is enabled.
         if (!$CFG->enablenotes) {
             throw new moodle_exception('notesdisabled', 'notes');