diff --git a/mods/d2k/rules/structures.yaml b/mods/d2k/rules/structures.yaml
index 619fc2ec2b..fb7645e4e3 100644
--- a/mods/d2k/rules/structures.yaml
+++ b/mods/d2k/rules/structures.yaml
@@ -74,6 +74,7 @@ CONCRETEB:
 	ProvidesCustomPrerequisite:
 		Prerequisite: Conyard
 	WithBuildingPlacedOverlay:
+		Palette: d2k
 
 ^POWER:
 	Inherits: ^Building