diff --git a/18.Spring-Boot-Jackson/src/main/java/com/example/controller/TestJsonController.java b/18.Spring-Boot-Jackson/src/main/java/com/example/controller/TestJsonController.java
index 14440f2..a2b6502 100644
--- a/18.Spring-Boot-Jackson/src/main/java/com/example/controller/TestJsonController.java
+++ b/18.Spring-Boot-Jackson/src/main/java/com/example/controller/TestJsonController.java
@@ -70,7 +70,7 @@ public class TestJsonController {
 	@ResponseBody
 	public String readJsonAsObject() {
 		try {
-			String json = "{\"user-name\":\"mrbird\"}";
+			String json = "{\"userName\":\"mrbird\"}";
 			User user = mapper.readValue(json, User.class);
 			String name = user.getUserName();
 			return name;