diff --git a/tree_models.lua b/tree_models.lua
index 1295a60..60bb780 100644
--- a/tree_models.lua
+++ b/tree_models.lua
@@ -268,7 +268,7 @@ moretrees.fir_model={
 	rules_a=nil,
 	rules_b=nil,
 	trunk="moretrees:fir_trunk",
-	leaves=nil,
+	leaves="moretrees:fir_leaves",
 	angle=45,
 	iterations=7,
 	random_level=5,