diff --git a/notes/设计模式.md b/notes/设计模式.md
index 4da4c967..6a4dcba0 100644
--- a/notes/设计模式.md
+++ b/notes/设计模式.md
@@ -101,8 +101,8 @@ public abstract class Duck {
 }
 ```
 ```java
-public class MallarDuck extends Duck{
-    public MallarDuck(){
+public class MallardDuck extends Duck{
+    public MallardDuck(){
         flyBehavior = new FlyWithWings();
         quackBehavior = new Quack();
     }
@@ -161,11 +161,11 @@ public class Squeak implements QuackBehavior{
 ```java
 public class MiniDuckSimulator {
     public static void main(String[] args) {
-        Duck mallarDuck = new MallarDuck();
-        mallarDuck.performQuack();
-        mallarDuck.performFly();
-        mallarDuck.setFlyBehavior(new FlyNoWay());
-        mallarDuck.performFly();
+        Duck mallardDuck = new MallardDuck();
+        mallardDuck.performQuack();
+        mallardDuck.performFly();
+        mallardDuck.setFlyBehavior(new FlyNoWay());
+        mallardDuck.performFly();
     }
 }
 ```