diff --git a/mods/d2k/rules/vehicles.yaml b/mods/d2k/rules/vehicles.yaml
index f1c6cbe73c..a3a9a42c15 100644
--- a/mods/d2k/rules/vehicles.yaml
+++ b/mods/d2k/rules/vehicles.yaml
@@ -102,6 +102,7 @@ HARVESTER.Husk:
 HARVESTER.starport:
 	Inherits: HARVESTER
 	Buildable:
+		Prerequisites: Starport
 		Queue: Starport
 		BuiltAt: starporta, starporth, starporto
 	Valued:
@@ -192,6 +193,7 @@ QUAD:
 QUAD.starport:
 	Inherits: QUAD
 	Buildable:
+		Prerequisites: Starport
 		Queue: Starport
 		BuiltAt: starporta, starporth, starporto
 	Valued: