diff --git a/lib/private/db/mdb2schemamanager.php b/lib/private/db/mdb2schemamanager.php
index 416e2f5542..6378c76905 100644
--- a/lib/private/db/mdb2schemamanager.php
+++ b/lib/private/db/mdb2schemamanager.php
@@ -19,6 +19,8 @@ class MDB2SchemaManager {
 	 */
 	public function __construct($conn) {
 		$this->conn = $conn;
+		$this->conn->close();
+		$this->conn->connect();
 	}
 
 	/**