diff --git a/yabee_libs/egg_writer.py b/yabee_libs/egg_writer.py
index 9c7743b..93f58cb 100644
--- a/yabee_libs/egg_writer.py
+++ b/yabee_libs/egg_writer.py
@@ -307,7 +307,7 @@ def collect_vertices(self):
         idx = 0
         for spline in self.obj_ref.data.splines:
             for vtx in spline.points:
-                co = self.obj_ref.matrix_world * vtx.co
+                co = self.obj_ref.matrix_world @ vtx.co
                 fixed_co = tuple(map(lambda x: x * co[3], co[:3])) + (co[3],)
                 vertices.append('<Vertex> %i {\n  %s\n}\n' % (idx,
                                                               ' '.join(map(STRF, fixed_co))))