diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 0913438d44..c079e5900c 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -7239,7 +7239,7 @@ static int sip_register(const char *value, int lineno)
 	if (hostname)
 		*hostname++ = '\0';
 	if (ast_strlen_zero(username) || ast_strlen_zero(hostname)) {
-		ast_log(LOG_WARNING, "Format for registration is [transport://]user[:secret[:authuser]]@domain[:port][/extension][~expiry] at line %d\n", lineno);
+		ast_log(LOG_WARNING, "Format for registration is [transport://]user[@domain][:secret[:authuser]]@host[:port][/extension][~expiry] at line %d\n", lineno);
 		return -1;
 	}
 
diff --git a/configs/sip.conf.sample b/configs/sip.conf.sample
index 20467f1aa1..08089d9276 100644
--- a/configs/sip.conf.sample
+++ b/configs/sip.conf.sample
@@ -475,7 +475,7 @@ srvlookup=yes                   ; Enable DNS SRV lookups on outbound calls
 ;----------------------------------------- OUTBOUND SIP REGISTRATIONS  ------------------------
 ; Asterisk can register as a SIP user agent to a SIP proxy (provider)
 ; Format for the register statement is:
-;       register => [transport://]user[:secret[:authuser]]@domain[:port][/extension][~expiry]
+;       register => [transport://]user[@domain][:secret[:authuser]]@host[:port][/extension][~expiry]
 ;
 ;
 ;