diff --git a/solutions/chapter-05.md b/solutions/chapter-05.md
index fe8823a..cb20929 100644
--- a/solutions/chapter-05.md
+++ b/solutions/chapter-05.md
@@ -126,7 +126,7 @@
 ---
 30. Both R1 and R2 is 0.
 ---
-31. 0001 101 100 000 110
+31. 0001 101 000 1 11000
 ---
 32. Solution:
 	1. BRp #2