diff --git a/lib/ConnectionManager.php b/lib/ConnectionManager.php
index fb16d167f..727c33dac 100644
--- a/lib/ConnectionManager.php
+++ b/lib/ConnectionManager.php
@@ -39,10 +39,15 @@ public static function get_connection($name=null)
 	 * Drops the connection from the connection manager. Does not actually close it since there
 	 * is no close method in PDO.
 	 *
+	 * If $name is null then the default connection will be returned.
+	 *
 	 * @param string $name Name of the connection to forget about
 	 */
 	public static function drop_connection($name=null)
 	{
+		$config = Config::instance();
+		$name = $name ? $name : $config->get_default_connection();
+
 		if (isset(self::$connections[$name]))
 			unset(self::$connections[$name]);
 	}