diff --git a/FUSE-Mount.md b/FUSE-Mount.md
index b17ae70..07672e4 100644
--- a/FUSE-Mount.md
+++ b/FUSE-Mount.md
@@ -300,6 +300,6 @@ The issue is with samba.conf. If you see NT_STATUS_ACCESS_DENIED error, try to a
 ### What does "df" output means?  ###
 ```
 Size: total number of volumes * volume size limit
-Used: Logic Size of files * replication = physical disk size taken
+Used: (Logical Total Size of files - Logical Deleted File Size) * replication = physical disk size taken
 Available = Size - Used
 ```
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