diff --git a/Model/Datasource/MongodbSource.php b/Model/Datasource/MongodbSource.php
index 2fae345..dfbd943 100755
--- a/Model/Datasource/MongodbSource.php
+++ b/Model/Datasource/MongodbSource.php
@@ -1426,9 +1426,6 @@ public function logQuery($query, $args = array()) {
  * @access protected
  */
 	protected function _convertId(&$mixed, $conditions = false) {
-		if (is_int($mixed) || ctype_digit($mixed)) {
-			return;
-		}
 		if (is_string($mixed)) {
 			if (strlen($mixed) !== 24) {
 				return;