diff --git a/tools/config/stix.yml b/tools/config/stix.yml
index fff7f768..c6d13293 100644
--- a/tools/config/stix.yml
+++ b/tools/config/stix.yml
@@ -43,13 +43,9 @@ fieldmappings:
     - ipv6-addr:value
     - network-traffic:dst_ref.value
   event_data.DestinationPort:
-    - ipv4-addr:value
-    - ipv6-addr:value
-    - network-traffic:dst_ref.value
+    - network-traffic:dst_port
   DestinationPort:
-    - ipv4-addr:value
-    - ipv6-addr:value
-    - network-traffic:dst_ref.value
+    - network-traffic:dst_port
   event_data.SubjectUserName:
     - user-account:user_id
   event_data.User: