diff --git a/assembly-crash-course/level-23/DESCRIPTION.md b/assembly-crash-course/level-23/DESCRIPTION.md
index ab0645f..30e8609 100644
--- a/assembly-crash-course/level-23/DESCRIPTION.md
+++ b/assembly-crash-course/level-23/DESCRIPTION.md
@@ -41,10 +41,10 @@ most_common_byte(src_addr, size):
     [stack_base - curr_byte * 2] += 1
     i += 1
 
-  b = 1
+  b = 0
   max_freq = 0
   max_freq_byte = 0
-  while b <= 0x100:
+  while b <= 0xff:
     if [stack_base - b * 2] > max_freq:
       max_freq = [stack_base - b * 2]
       max_freq_byte = b