diff --git a/mods/d2k/rules/structures.yaml b/mods/d2k/rules/structures.yaml
index d233743afb..20ad4f1205 100644
--- a/mods/d2k/rules/structures.yaml
+++ b/mods/d2k/rules/structures.yaml
@@ -356,6 +356,7 @@
 	Tooltip:
 		Name: Concrete Wall
 		Description: Stop units and blocks enemy fire.
+		Hotkey: o
 	AppearsOnRadar:
 	Building:
 		BuildSounds: CHUNG.WAV