diff --git a/docs/auditctl.8 b/docs/auditctl.8
index 2c970cf..043a9d6 100644
--- a/docs/auditctl.8
+++ b/docs/auditctl.8
@@ -210,6 +210,9 @@ Process ID
 .B ppid
 Parent's Process ID
 .TP
+.B saddr_fam
+Address family number as found in /usr/include/bits/socket.h. For example, IPv4 would be 2 and IPv6 would be 10.
+.TP
 .B sessionid
 User's login session ID
 .TP