diff --git a/mods/d2k/maps/atreides-04/rules.yaml b/mods/d2k/maps/atreides-04/rules.yaml
index e1b80fad3c..9bbcef577b 100644
--- a/mods/d2k/maps/atreides-04/rules.yaml
+++ b/mods/d2k/maps/atreides-04/rules.yaml
@@ -62,16 +62,20 @@ engineer:
 
 repair_pad:
 	Buildable:
-		Prerequisites: heavy_factory, upgrade.heavy
+		Prerequisites: heavy_factory
 
 mcv:
 	Buildable:
-		Prerequisites: repair_pad, upgrade.heavy
+		Prerequisites: repair_pad
 
 upgrade.conyard:
 	Buildable:
 		Prerequisites: ~disabled
 
+upgrade.heavy:
+	Buildable:
+		Prerequisites: ~disabled
+
 # HACK: AI units can't attack the sietch if it was on a real rock
 tile475:
 	Immobile:
diff --git a/mods/d2k/maps/harkonnen-04/rules.yaml b/mods/d2k/maps/harkonnen-04/rules.yaml
index 814f5ca58b..8961247996 100644
--- a/mods/d2k/maps/harkonnen-04/rules.yaml
+++ b/mods/d2k/maps/harkonnen-04/rules.yaml
@@ -62,16 +62,20 @@ engineer:
 
 repair_pad:
 	Buildable:
-		Prerequisites: heavy_factory, upgrade.heavy
+		Prerequisites: heavy_factory
 
 mcv:
 	Buildable:
-		Prerequisites: repair_pad, upgrade.heavy
+		Prerequisites: repair_pad
 
 upgrade.conyard:
 	Buildable:
 		Prerequisites: ~disabled
 
+upgrade.heavy:
+	Buildable:
+		Prerequisites: ~disabled
+
 fremen:
 	AutoTarget:
 		InitialStanceAI: AttackAnything
diff --git a/mods/d2k/maps/ordos-04/rules.yaml b/mods/d2k/maps/ordos-04/rules.yaml
index c2e4e511f7..89e09b5f61 100644
--- a/mods/d2k/maps/ordos-04/rules.yaml
+++ b/mods/d2k/maps/ordos-04/rules.yaml
@@ -58,12 +58,16 @@ engineer:
 
 repair_pad:
 	Buildable:
-		Prerequisites: heavy_factory, upgrade.heavy
+		Prerequisites: heavy_factory
 
 mcv:
 	Buildable:
-		Prerequisites: repair_pad, upgrade.heavy
+		Prerequisites: repair_pad
 
 upgrade.conyard:
 	Buildable:
 		Prerequisites: ~disabled
+
+upgrade.heavy:
+	Buildable:
+		Prerequisites: ~disabled