diff --git a/Production-Setup.md b/Production-Setup.md
index ea0ac08..4c70bbf 100644
--- a/Production-Setup.md
+++ b/Production-Setup.md
@@ -71,7 +71,7 @@ weed master -mdir=/data/seaweedfs/master -peers=ip1:9333,ip2:9333,ip3:9333 -ip=i
 Additional notes:
 * Depending on the available disk space on each volume server, the master may need
 to reduce maximum volume size, e.g., add `-volumeSizeLimitMB=1024`. This will ensure
-each volume has several volumes.
+each volume has several volumes. On the note, currently, you can't change `volumeSizeLimitMB`.
 
 * Since it is for production, you may also want to add `-metrics.address=<Prometheus gateway address>`. See [[System Metrics]].