diff --git a/src/AllCheckpoint.php b/src/AllCheckpoint.php
new file mode 100644
index 00000000..93071277
--- /dev/null
+++ b/src/AllCheckpoint.php
@@ -0,0 +1,26 @@
+<?php
+
+/**
+ * This file is part of `prooph/event-store-client`.
+ * (c) 2018-2018 prooph software GmbH <contact@prooph.de>
+ * (c) 2018-2018 Sascha-Oliver Prolic <saschaprolic@googlemail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Prooph\EventStoreClient;
+
+/**
+ * This class contains constants to be used when setting up subscriptions
+ * using the EventStoreAsyncConnection::subscribeToAllFromAsync method
+ */
+class AllCheckpoint
+{
+    /**
+     * Indicates that a catch-up subscription should receive all events in the database.
+     */
+    public const ALL_START = null;
+}