diff --git a/ChangeLog b/ChangeLog
index 9aa2fd0..98259a0 100755
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,7 @@
 - Fix bookkeeper type - use key_t
 - Add multiple packet repeaters to nfcapd/sfcapd. Up to 8 repeaters (-R) can be defined.
 - Ignore OSX .DS_Store files in -R file list
+- Add CISCO ASA elements initiatorPackets (298) responderPackets (299)
 
 2018-05-06
 - New bookkeeper hash broke NfSen. Fixed. ported back to release 1.6.17
diff --git a/bin/netflow_v9.h b/bin/netflow_v9.h
index 77400e8..61be692 100644
--- a/bin/netflow_v9.h
+++ b/bin/netflow_v9.h
@@ -290,7 +290,8 @@ typedef struct common_header_s {
 #define NF_F_XLATE_DST_PORT_84      40004
 #define NF_F_FW_EVENT_84            40005
 
-// ASA 5508
+// ASA 9.x packet counters: initiatorPackets and responderPackets
+// see https://www.iana.org/assignments/ipfix/ipfix.xhtml
 #define NF_F_INITIATORPACKETS		298
 #define NF_F_RESPONDERPACKETS		299