diff --git a/configs/sip.conf.sample b/configs/sip.conf.sample
index bde424ba99..5e10dbb9c5 100644
--- a/configs/sip.conf.sample
+++ b/configs/sip.conf.sample
@@ -46,7 +46,7 @@
 ;   sip show users               Show all SIP users (including friends)
 ;   sip show registry            Show status of hosts we register with
 ;
-;   sip set debug                Show all SIP messages
+;   sip set debug on             Show all SIP messages
 ;
 ;   module reload chan_sip.so    Reload configuration file
 ;                                Active SIP peers will not be reconfigured