diff --git a/mod.config b/mod.config
index 393ab805..fc7259b8 100644
--- a/mod.config
+++ b/mod.config
@@ -9,7 +9,7 @@
 MOD_ID="gen"
 
 # The OpenRA engine version to use for this project.
-ENGINE_VERSION="12a16abe8e3a7fc61b3ebacceb31e45acca81f01"
+ENGINE_VERSION="2a853b13c65a103edccb38a3c630ccc1bd4e4a70"
 
 ##############################################################################
 # Packaging
diff --git a/mods/gen/rules/structures.yaml b/mods/gen/rules/structures.yaml
index 1f3010e1..18b80a6a 100644
--- a/mods/gen/rules/structures.yaml
+++ b/mods/gen/rules/structures.yaml
@@ -3403,6 +3403,7 @@ building.usa_airfield:
 	SpawnNeighboringActors@DOCK:
 		ActorTypes: hack.dock
 		Locations: 2,2, 3,1, 3,2
+		RequiresCondition: !build-incomplete
 	WithIdleOverlay@DISH:
 		Sequence: idle-dish
 	Exit@0:
@@ -3528,6 +3529,7 @@ building.prc_airfield:
 	SpawnNeighboringActors@DOCK:
 		ActorTypes: hack.dock
 		Locations: 0,1, 2,1, 3,1
+		RequiresCondition: !build-incomplete
 	Selectable:
 		Bounds: 4096, 2730, 0, -170
 	WithIdleOverlay@FLAG: