diff --git a/blender/osmassets/grass.py b/blender/osmassets/grass.py
index ee530e4..523b307 100644
--- a/blender/osmassets/grass.py
+++ b/blender/osmassets/grass.py
@@ -5,7 +5,7 @@ from osmassets.mesh import MeshBatch
 
 
 def assemble(ring, way_id, scene_xmin, scene_xmax, scene_ymin, scene_ymax,
-             green_c, grass_mat, tuft_variants, add_grass_tufts_fn):
+             green_c, grass_mat, tuft_variants, add_grass_tufts):
     ring = clip_polygon(ring, scene_xmin, scene_xmax, scene_ymin, scene_ymax)
     name = "Grass_" + str(way_id)
     focus = list(ring)
@@ -16,7 +16,7 @@ def assemble(ring, way_id, scene_xmin, scene_xmax, scene_ymin, scene_ymax,
     obj = batch.finish()
     tufts = 0
     if tuft_variants:
-        tufts = add_grass_tufts_fn(name, ring, tuft_variants, green_c)
+        tufts = add_grass_tufts(name, ring, tuft_variants, green_c)
         if obj:
             obj["grass_tufts"] = tufts
     return 1, tufts, focus