diff --git a/library/Zend/Oauth/Signature/SignatureAbstract.php b/library/Zend/Oauth/Signature/SignatureAbstract.php
index d04f7f40b1..5dea6a0fe7 100644
--- a/library/Zend/Oauth/Signature/SignatureAbstract.php
+++ b/library/Zend/Oauth/Signature/SignatureAbstract.php
@@ -167,7 +167,7 @@ protected function _getBaseSignatureString(array $params, $method = null, $url =
     protected function _toByteValueOrderedQueryString(array $params)
     {
         $return = array();
-        uksort($params, 'strnatcmp');
+        ksort($params);
         foreach ($params as $key => $value) {
             if (is_array($value)) {
                 natsort($value);