diff --git a/subjects/binaryaddition/README.md b/subjects/binaryaddition/README.md
index 3eedc839..e5bcf72e 100644
--- a/subjects/binaryaddition/README.md
+++ b/subjects/binaryaddition/README.md
@@ -43,5 +43,5 @@ $ go run .
 [1 1]
 [1 0 0]
 [1 0 1]
-[1 0 0 0 0]
+[1 0 0 0 1]
 ```