diff --git a/addon/i3dio/node_classes/shape.py b/addon/i3dio/node_classes/shape.py
index b6d9bd2..ccf2c37 100644
--- a/addon/i3dio/node_classes/shape.py
+++ b/addon/i3dio/node_classes/shape.py
@@ -131,7 +131,8 @@ def generate_evaluated_mesh(self, mesh_object: bpy.types.Object, reference_frame
         # Calculates triangles from mesh polygons
         self.mesh.calc_loop_triangles()
         # Recalculates normals after the scaling has messed with them
-        self.mesh.calc_normals_split()
+        if bpy.app.version < (4, 1, 0):
+            self.mesh.calc_normals_split()
 
     # On hold for the moment, it seems to be triggered at random times in the middle of an export which messes with
     # everything. Further investigation is needed.