diff --git a/deco_caves.lua b/deco_caves.lua
index eff0a37..c0d5c6d 100644
--- a/deco_caves.lua
+++ b/deco_caves.lua
@@ -322,7 +322,7 @@ end
 newnode = fun_caves.clone_node("default:stone")
 newnode.description = "Cave Stone With Algae"
 newnode.tiles = {"default_stone.png^fun_caves_algae.png"}
-newnode.groups = {stone=1, crumbly=3}
+newnode.groups = {stone=1, cracky=3, crumbly=3}
 newnode.sounds = default.node_sound_dirt_defaults({
 	footstep = {name="default_grass_footstep", gain=0.25},
 })
@@ -345,7 +345,7 @@ minetest.register_node("fun_caves:hot_stone", {
 newnode = fun_caves.clone_node("default:stone")
 newnode.description = "Cave Stone With Lichen"
 newnode.tiles = {"default_stone.png^fun_caves_lichen.png"}
-newnode.groups = {stone=1, crumbly=3}
+newnode.groups = {stone=1, cracky=3, crumbly=3}
 newnode.sounds = default.node_sound_dirt_defaults({
 	footstep = {name="default_grass_footstep", gain=0.25},
 })
@@ -355,7 +355,7 @@ minetest.register_node("fun_caves:stone_with_lichen", newnode)
 newnode = fun_caves.clone_node("default:stone")
 newnode.description = "Cave Stone With Moss"
 newnode.tiles = {"default_stone.png^fun_caves_moss.png"}
-newnode.groups = {stone=1, crumbly=3}
+newnode.groups = {stone=1, cracky=3, crumbly=3}
 newnode.sounds = default.node_sound_dirt_defaults({
 	footstep = {name="default_grass_footstep", gain=0.25},
 })