diff --git a/libs/Game_threads/orbit_demo.py b/libs/Game_threads/orbit_demo.py
index 7ca38bc..80d0c5e 100644
--- a/libs/Game_threads/orbit_demo.py
+++ b/libs/Game_threads/orbit_demo.py
@@ -17,7 +17,6 @@ class Orbit_demo(threading.Thread):
         # dic
         self.ship_info = {"mass": [1, 5, ["kg"], []], "force": []}
         self.planet_system = {"Solar System": {"planets": {"smearth": {"description": "", "gravity": 9.81, "radius": 63710000, "map_color": [103, 157, 255]}}}}
-        self.main_ship_parts = {}
         self.this_planet_info = {}
         self.back_ground_element = {}
         self.back_ground_image = ""