diff --git a/lib/class-wp-rest-oauth1-admin.php b/lib/class-wp-rest-oauth1-admin.php
index f95c1e8..6ed5ad2 100644
--- a/lib/class-wp-rest-oauth1-admin.php
+++ b/lib/class-wp-rest-oauth1-admin.php
@@ -166,7 +166,7 @@ protected static function validate_parameters( $params ) {
 		return array(
 			'name'        => wp_filter_post_kses( $params['name'] ),
 			'description' => wp_filter_post_kses( $params['description'] ),
-			'callback'    => $params['description'],
+			'callback'    => $params['callback'],
 		);
 	}