diff --git a/day-20/day-20.py b/day-20/day-20.py
index 79a0a72..94bec0f 100644
--- a/day-20/day-20.py
+++ b/day-20/day-20.py
@@ -12,7 +12,6 @@ def enhance(algorithm, in_image, boundary):
     for y in range(min_y - boundary, max_y + boundary):
         for x in range(min_x - boundary, max_x + boundary):
             idx = 0
-            bit = 8
             for dy in [-1, 0, 1]:
                 for dx in [-1, 0, 1]:
                     idx <<= 1