diff --git a/mods/d2k/rules/vehicles.yaml b/mods/d2k/rules/vehicles.yaml
index 906abe94df..5b68eb2a0a 100644
--- a/mods/d2k/rules/vehicles.yaml
+++ b/mods/d2k/rules/vehicles.yaml
@@ -359,8 +359,9 @@ MISSILETANK.Husk:
 MISSILETANK.starport:
 	Inherits: MISSILETANK
 	Buildable:
+		Prerequisites: Heavy
 		Queue: Starport
 		Owner: atreides, harkonnen, ordos
 		BuiltAt: starporta, starporth, starporto
 	Valued:
-		Cost: 1250
\ No newline at end of file
+		Cost: 1250