diff --git a/zh/12.1.md b/zh/12.1.md
index 7d09919e181c5c872dda2eb0bdbb35f3d15d2749..e8c036c95e934d5c7c1ed6917fdffd9ede7e500c 100644
--- a/zh/12.1.md
+++ b/zh/12.1.md
@@ -22,9 +22,9 @@ import (
 )
 
 func main() {
-log.WithFields(log.Fields{
-	"animal": "walrus",
-}).Info("A walrus appears")
+	log.WithFields(log.Fields{
+		"animal": "walrus",
+	}).Info("A walrus appears")
 }
 ```
 ### 基于logrus的自定义日志处理