diff --git a/__init__.py b/__init__.py
index 564d6a7..a9cad2c 100644
--- a/__init__.py
+++ b/__init__.py
@@ -42,15 +42,16 @@ class GenerateSpaceship(Operator):
     def execute(self, context):
         spaceship_generator.generate_spaceship(
             self.random_seed,
-            self.num_asymmetry_segments_min,
-            self.num_asymmetry_segments_max,
+            self.num_hull_segments_min,
+            self.num_hull_segments_max,
             self.create_asymmetry_segments,
             self.num_asymmetry_segments_min,
             self.num_asymmetry_segments_max,
             self.create_face_detail,
             self.allow_horizontal_symmetry,
             self.allow_vertical_symmetry,
-            self.apply_bevel_modifier)
+            self.apply_bevel_modifier,
+            self.assign_materials)
         return {'FINISHED'}
 
 def menu_func(self, context):