diff --git a/eBook/10.5.md b/eBook/10.5.md
index 27032d0..70022ce 100644
--- a/eBook/10.5.md
+++ b/eBook/10.5.md
@@ -43,7 +43,7 @@ func main() {
 
 	// 使用结构体字面量
 	outer2 := outerS{6, 7.5, 60, innerS{5, 10}}
-	fmt.Printf("outer2 is:", outer2)
+	fmt.Println("outer2 is:", outer2)
 }
 ```