diff --git a/ch2/ch2-06-2.md b/ch2/ch2-06-2.md
index e1dc4f8..84689d7 100644
--- a/ch2/ch2-06-2.md
+++ b/ch2/ch2-06-2.md
@@ -58,6 +58,7 @@ var pc [256]byte = func() (pc [256]byte) {
 	for i := range pc {
 		pc[i] = pc[i/2] + byte(i&1)
 	}
+	return
 }()
 ```