diff --git a/PVE/Storage/CephFSPlugin.pm b/PVE/Storage/CephFSPlugin.pm
index 1bfdd01..ebd6eec 100644
--- a/PVE/Storage/CephFSPlugin.pm
+++ b/PVE/Storage/CephFSPlugin.pm
@@ -118,6 +118,7 @@ sub options {
 	mkdir => { optional => 1 },
 	fuse => { optional => 1 },
 	bwlimit => { optional => 1 },
+	maxfiles => { optional => 1 },
     };
 }