diff --git a/public/games/age-of-dwarves/data/unit_actions.json b/public/games/age-of-dwarves/data/unit_actions.json
index 6aa55196..5c8bb0db 100644
--- a/public/games/age-of-dwarves/data/unit_actions.json
+++ b/public/games/age-of-dwarves/data/unit_actions.json
@@ -12,6 +12,7 @@
     "founder": ["found_city"],
     "worker": ["build_improvement"],
     "siege": ["pack_siege", "deploy_siege", "bombard"],
+    "arcing": [],
     "amphibious": ["embark", "disembark"],
     "sentry": ["sentry"]
   }