diff --git a/packages/playground/assets/models/tree/tree.obj b/packages/playground/assets/models/tree/tree.obj
index b2c5e4afa..793f72006 100644
--- a/packages/playground/assets/models/tree/tree.obj
+++ b/packages/playground/assets/models/tree/tree.obj
@@ -1,4 +1,4 @@
-mtllib Tree.mtl
+mtllib tree.mtl
 o Tree_Plane
 v -0.049086 -0.124876 0.352464
 v -0.373512 -1.049901 1.343292