Index: uspace/srv/vfs/vfs_ops.c
===================================================================
--- uspace/srv/vfs/vfs_ops.c	(revision 41e9ef7aebf4ead7c936cb12dd8540742f9e8183)
+++ uspace/srv/vfs/vfs_ops.c	(revision c8a894d80f241d58349cd8422ede2f690d234533)
@@ -1388,5 +1388,5 @@
 		if (IPC_GET_IMETHOD(data) != VFS_IN_PING) {
 			rc = ENOTSUP;
-			async_answer_1(callid, rc, 0);
+			async_answer_3(callid, rc, 0, 0, 0);
 			goto exit;
 		}