diff --git a/mods/MAPGEN/mcl_structures/ruined_portal.lua b/mods/MAPGEN/mcl_structures/ruined_portal.lua
index 002195f76..618cc407b 100644
--- a/mods/MAPGEN/mcl_structures/ruined_portal.lua
+++ b/mods/MAPGEN/mcl_structures/ruined_portal.lua
@@ -16,7 +16,7 @@ local def = {
 	flags = "place_center_x, place_center_z, all_floors",
 	solid_ground = true,
 	make_foundation = true,
-	chunk_probability = 400,
+	chunk_probability = 800,
 	y_max = mcl_vars.mg_overworld_max,
 	y_min = 1,
 	sidelen = 10,