diff --git a/Api/Odr.php b/Api/Odr.php
index 4b214e0..7def991 100644
--- a/Api/Odr.php
+++ b/Api/Odr.php
@@ -498,7 +498,7 @@ protected function _execute($url = '', $method = self::DEFAULT_METHOD, array $da
         curl_close($ch);
 
         // Too much request at a time can ban us
-        sleep(1);
+        usleep(500);
 
         if (!empty($this->_error)) {
             throw new Api_Odr_Exception($this->_error);