diff --git a/mods/ra/maps/fort-lonestar/rules.yaml b/mods/ra/maps/fort-lonestar/rules.yaml
index 0d7f166c8b..d72579caf4 100644
--- a/mods/ra/maps/fort-lonestar/rules.yaml
+++ b/mods/ra/maps/fort-lonestar/rules.yaml
@@ -33,6 +33,7 @@ World:
 		BuildRadiusCheckboxVisible: False
 	SpawnStartingUnits:
 		DropdownVisible: False
+		DropdownLocked: True
 	MapOptions:
 		TechLevelDropdownLocked: True
 		TechLevel: unrestricted
diff --git a/mods/ra/maps/oil-spill/rules.yaml b/mods/ra/maps/oil-spill/rules.yaml
index d70ff561fa..829b7a4f8f 100644
--- a/mods/ra/maps/oil-spill/rules.yaml
+++ b/mods/ra/maps/oil-spill/rules.yaml
@@ -3,6 +3,7 @@ World:
 		Scripts: oil-spill.lua
 	SpawnStartingUnits:
 		DropdownVisible: False
+		DropdownLocked: True
 	StartingUnits@mcvonly:
 		BaseActor: fcom