diff --git a/src/const.py b/src/const.py
index 3e23c0a..d875b7c 100644
--- a/src/const.py
+++ b/src/const.py
@@ -23,8 +23,7 @@ for img in [
 ]:
     IMAGES.append(image.load(main_path + '/images/Tiles/' + img + ".png"))
 
-IMAGES_MAPPING = [0 for _ in range(11)]
-IMAGES_MAPPING[-3:] = [1 for _ in range(3)]
+IMAGES_MAPPING = tuple([0 for _ in range(8)] + [1 for _ in range(3)])
 
 ICON = main_path + '/images/mine_icon.png'
 SAPPER_IDLE = image.load(main_path + '/images/sapper_idle/cpt_bomba.png')