diff --git a/src/sip/sip.c b/src/sip/sip.c
index 7c22307a4..9e5649c29 100644
--- a/src/sip/sip.c
+++ b/src/sip/sip.c
@@ -203,6 +203,7 @@ void sip_close(struct sip *sip, bool force)
  * @param sock  Optional socket to send from
  * @param tp    SIP transport
  * @param dst   Destination network address
+ * @param host  Target hostname
  * @param mb    Buffer containing SIP message
  * @param connh SIP connected handler
  * @param arg   Handler argument