diff --git a/adminer/drivers/mongo.inc.php b/adminer/drivers/mongo.inc.php
index 7dbcf76b..0508c0c5 100644
--- a/adminer/drivers/mongo.inc.php
+++ b/adminer/drivers/mongo.inc.php
@@ -425,7 +425,7 @@ if (isset($_GET["mongo"])) {
 							$this->_charset[$key] = 63;
 						}
 						$row[$key] =
-							(is_a($val, 'MongoId') ? "ObjectId(\"$va\")" :
+							(is_a($val, 'MongoId') ? "ObjectId(\"$val\")" :
 							(is_a($val, 'MongoDate') ? gmdate("Y-m-d H:i:s", $val->sec) . " GMT" :
 							(is_a($val, 'MongoBinData') ? $val->bin : //! allow downloading
 							(is_a($val, 'MongoRegex') ? "$val" :