diff --git a/suricata.yaml.in b/suricata.yaml.in
index 628a3c0d47..2f4bdccc90 100644
--- a/suricata.yaml.in
+++ b/suricata.yaml.in
@@ -1337,7 +1337,7 @@ decoder:
   # IANA assigned port 4789 is enabled.
   vxlan:
     enabled: true
-    ports: $VXLAN_PORTS # syntax: '8472, 4789'
+    ports: $VXLAN_PORTS # syntax: '[8472, 4789]' or '4789'.
 
 
 ##