diff --git a/lignumis/prototypes/content/gold/stromatolite.lua b/lignumis/prototypes/content/gold/stromatolite.lua
index bc63ff8..6106fc1 100644
--- a/lignumis/prototypes/content/gold/stromatolite.lua
+++ b/lignumis/prototypes/content/gold/stromatolite.lua
@@ -1,6 +1,7 @@
 local space_age_item_sounds = require("__space-age__.prototypes.item_sounds")
 
 local stromatolite = table.deepcopy(data.raw["simple-entity"]["copper-stromatolite"])
+stromatolite.type = "tree"
 stromatolite.name = "gold-stromatolite"
 stromatolite.icon = "__lignumis__/graphics/icons/gold-stromatolite.png"
 stromatolite.autoplace = {