diff --git a/build/integration/features/bootstrap/WebDav.php b/build/integration/features/bootstrap/WebDav.php
index c59d035d1e7..69962a7282d 100644
--- a/build/integration/features/bootstrap/WebDav.php
+++ b/build/integration/features/bootstrap/WebDav.php
@@ -42,7 +42,7 @@ trait WebDav {
 	private $davPath = "remote.php/webdav";
 	/** @var ResponseInterface */
 	private $response;
-	/** @var array */
+	/** @var map with user as key and another map as value, which has path as key and etag as value */
 	private $storedETAG = NULL;
 
 	/**