diff --git a/wx/Help.php b/wx/Help.php
index 60559a8..288233b 100644
--- a/wx/Help.php
+++ b/wx/Help.php
@@ -73,13 +73,13 @@ class Help extends Miniprogarampage
 	 */
 	public static function sign(array $array, $key, $type)
 	{
-		ksort($array, SORT_STRING);
+		ksort($array, SORT_ASC);
 		$string = [];
-		foreach ($array as $key => $val) {
+		foreach ($array as $hashKey => $val) {
 			if (empty($val)) {
 				continue;
 			}
-			$string[] = $key . '=' . urlencode($val);
+			$string[] = $hashKey . '=' . urlencode($val);
 		}
 		$string[] = 'key=' . $key;
 		$string = implode('&', $string);