diff --git a/data/mods/Magiclysm/worldgen/regional_overlay.json b/data/mods/Magiclysm/worldgen/regional_overlay.json
index de585b26ede14..ca57b13045260 100644
--- a/data/mods/Magiclysm/worldgen/regional_overlay.json
+++ b/data/mods/Magiclysm/worldgen/regional_overlay.json
@@ -4,6 +4,6 @@
     "//id": "magiclysm_buildings_overlay",
     "regions": [ "all" ],
     "city": { "shops": { "magic_shop": 100, "used_bookstore": 225 }, "basements": { "magic_basement": 50 } },
-    "other": { "f_glow_boulder": 0.3333 }
+    "field_coverage": { "other": { "f_glow_boulder": 0.3333 } }
   }
 ]