diff --git a/docs/cn/json2pb.md b/docs/cn/json2pb.md
index 79d7dd4f72..fc41073f61 100644
--- a/docs/cn/json2pb.md
+++ b/docs/cn/json2pb.md
@@ -39,7 +39,7 @@ repeated int32 numbers = 1;
 ```protobuf
 // protobuf
 message Foo {
-    required int32 numbers = 1;
+    repeated int32 numbers = 1;
 }
 
 // rapidjson