diff --git a/doc/mpdconf.example b/doc/mpdconf.example
index 9d14bd642..4fc00dacd 100644
--- a/doc/mpdconf.example
+++ b/doc/mpdconf.example
@@ -314,6 +314,7 @@ input {
 ##	device		"Digital Audio (S/PDIF) (High Definition Audio Device)" # optional
 #		or
 ##	device		"0"		# optional
+##	mixer_type	"hardware"	# optional
 ## Exclusive mode blocks all other audio source, and get best audio quality without resampling.
 ##	exclusive	"no"		# optional
 ## Enumerate all devices in log.