diff --git a/mods/moreores/ores.lua b/mods/moreores/ores.lua
index e978f65e..124efcb7 100644
--- a/mods/moreores/ores.lua
+++ b/mods/moreores/ores.lua
@@ -39,7 +39,7 @@ minetest.register_ore({
 	wherein = "default:stone",
 	clust_scarcity = 15 * 15 * 15,
 	clust_num_ores = 2,
-	clust_size     = 6,
+	clust_size     = 3,
 	y_min     = -31000,
 	y_max     = -2048,
 })
@@ -50,7 +50,7 @@ minetest.register_ore({
 	wherein = "default:stone",
 	clust_scarcity = 22 * 22 * 22,
 	clust_num_ores = 5,
-	clust_size     = 9,
+	clust_size     = 5,
 	y_min     = -31000,
 	y_max     = -4096,
 })
@@ -61,7 +61,7 @@ minetest.register_ore({
 	wherein = "default:stone",
 	clust_scarcity = 28 * 28 * 28,
 	clust_num_ores = 20,
-	clust_size     = 12,
+	clust_size     = 7,
 	y_min     = -31000,
 	y_max     = -12288,
 })