diff --git a/conf/flight_plans/flight_plan.dtd b/conf/flight_plans/flight_plan.dtd
index c1f02400ea..6888dd7c1a 100644
--- a/conf/flight_plans/flight_plan.dtd
+++ b/conf/flight_plans/flight_plan.dtd
@@ -197,9 +197,6 @@ radius CDATA #REQUIRED>
 <!ATTLIST oval
 p1 CDATA #REQUIRED
 p2 CDATA #REQUIRED
-vmode CDATA #IMPLIED
-pitch CDATA #IMPLIED
-throttle CDATA #IMPLIED
 radius CDATA #REQUIRED
 alt CDATA #IMPLIED
 vmode CDATA #IMPLIED