typo

1 files changed, 1 insertions, 1 deletions

diff --git a/a6_book.py b/a6_book.py
index 2a641ba..059a717 100755
--- a/a6_book.py
+++ b/a6_book.py
@@ -17,7 +17,7 @@ SIGNATURE_32 = (
     1, 14, 17, 30,
     13, 2, 29, 18,
     3, 12, 19, 28,
-    11, 3, 27, 20,
+    11, 4, 27, 20,
     5, 10, 21, 26,
     9, 6, 25, 22,
     7, 8, 23, 24,