diff --git a/system/Attic/README b/system/Attic/README
index afbb18f387..daf574039b 100644
--- a/system/Attic/README
+++ b/system/Attic/README
@@ -2,3 +2,5 @@ Attic is a deduplicating backup program. The main goal of attic
 is to provide an efficient and secure way to backup data. The 
 data deduplication technique used makes Attic suitable for daily 
 backups since only actual changes are stored.
+
+Optional dependency: llfuse (used for mounting the archives)