diff --git a/doc/COMMANDS b/doc/COMMANDS
index 97fe32d0a..1462c4130 100644
--- a/doc/COMMANDS
+++ b/doc/COMMANDS
@@ -129,6 +129,7 @@ seek <int song> <int time>
 
 setvol <int vol>
 	set volume to _vol_
+	_vol_ the range of volume is 0-100
 
 shuffle
 	shuffles the current playlist