diff --git a/etc/rtpengine-recording.sample.conf b/etc/rtpengine-recording.sample.conf
index 29b7669df..7a0062a08 100644
--- a/etc/rtpengine-recording.sample.conf
+++ b/etc/rtpengine-recording.sample.conf
@@ -14,9 +14,6 @@ table = 0
 ### format of stored recordings: wav (default), mp3
 # output-format = mp3
 
-### mix participating sources into a single output 
-# output-mixed = 1
-
 ### directory containing rtpengine metadata files
 # spool-dir = /var/spool/rtpengine