diff --git a/day08.py b/day08.py
index c9bee00..611c4f0 100644
--- a/day08.py
+++ b/day08.py
@@ -45,7 +45,7 @@ def part2(test_mode=False):
         if not check_command.startswith('nop') and not check_command.startswith('jmp'):
             continue
 
-        check_code = my_input.copy()
+        check_code = my_input[:]
         if check_command.startswith('nop'):
             check_code[counter] = check_code[counter].replace('nop', 'jmp')