diff --git a/src/Ifsnop/Mysqldump/Mysqldump.php b/src/Ifsnop/Mysqldump/Mysqldump.php
index ab261738..d5dbc68d 100644
--- a/src/Ifsnop/Mysqldump/Mysqldump.php
+++ b/src/Ifsnop/Mysqldump/Mysqldump.php
@@ -182,7 +182,7 @@ public function __construct(
 
         // This drops MYSQL dependency, only use the constant if it's defined.
         if ("mysql" === $this->dbType) {
-            $pdoSettingsDefault[PDO::MYSQL_ATTR_USE_BUFFERED_QUERY] = false;
+            $this->pdoSettingsDefault[PDO::MYSQL_ATTR_USE_BUFFERED_QUERY] = false;
         }
 
         $this->pdoSettings = array_replace_recursive($this->pdoSettingsDefault, $pdoSettings);