diff --git a/items.lua b/items.lua
index 04afdc6..6c4433c 100644
--- a/items.lua
+++ b/items.lua
@@ -41,6 +41,8 @@ local function add_aliases(old, new)
 	minetest.register_alias("nether:"..old, "hell:"..new)
 	minetest.register_alias("nether"..":stair_"..old, "hell"..":stair_"..new)
 	minetest.register_alias("nether"..":slab_"..old, "hell"..":slab_"..new)
+	minetest.register_alias("stairs:"..":stair_"..old, "hell"..":stair_"..new)
+	minetest.register_alias("stairs:"..":slab_"..old, "hell"..":slab_"..new)
 end
 
 --[[