diff --git a/mods/d2k/rules/atreides.yaml b/mods/d2k/rules/atreides.yaml
index dd2e0bdca5..94684b4cf1 100644
--- a/mods/d2k/rules/atreides.yaml
+++ b/mods/d2k/rules/atreides.yaml
@@ -89,6 +89,7 @@ MCVA:
 MCVA.starport:
 	Inherits: MCVA
 	Buildable:
+		Prerequisites: Heavy
 		Queue: Starport
 		BuiltAt: starporta
 	Valued: