diff --git a/configs/zapata.conf.sample b/configs/zapata.conf.sample
index a8577b610c45597de820112eb0d9fd36cae42aa2..5b48ff939b3957ef23f3dd78d7bcb86a1157a992 100644
--- a/configs/zapata.conf.sample
+++ b/configs/zapata.conf.sample
@@ -339,7 +339,10 @@ usecallerid=yes
 ;
 ; The following option enables receiving MWI on FXO lines.  The default
 ; value is no.  When this is enabled, and MWI notification indicates on or off,
-; the script specified by the mwimonitornotify option is executed.
+; the script specified by the mwimonitornotify option is executed.  Also, an
+; internal Asterisk MWI event will be generated so that any other part of
+; Asterisk that cares about MWI state changes will get notified, just as if
+; the state change came from app_voicemail.
 ;
 ;mwimonitor=no
 ;