diff --git a/2020-02/spring-01/spring-01-exercise/src/main/java/ru/otus/spring/domain/Person.java b/2020-02/spring-01/spring-01-exercise/src/main/java/ru/otus/spring/domain/Person.java
index b19b42c1..c23be0c6 100644
--- a/2020-02/spring-01/spring-01-exercise/src/main/java/ru/otus/spring/domain/Person.java
+++ b/2020-02/spring-01/spring-01-exercise/src/main/java/ru/otus/spring/domain/Person.java
@@ -2,8 +2,8 @@ package ru.otus.spring.domain;
 
 public class Person {
 
-    private String name;
-    private int age;
+    private final String name;
+    private final int age;
 
     public Person(String name, int age) {
         this.name = name;
diff --git a/2020-02/spring-01/spring-01-solution/src/main/java/ru/otus/spring/domain/Person.java b/2020-02/spring-01/spring-01-solution/src/main/java/ru/otus/spring/domain/Person.java
index b19b42c1..c23be0c6 100644
--- a/2020-02/spring-01/spring-01-solution/src/main/java/ru/otus/spring/domain/Person.java
+++ b/2020-02/spring-01/spring-01-solution/src/main/java/ru/otus/spring/domain/Person.java
@@ -2,8 +2,8 @@ package ru.otus.spring.domain;
 
 public class Person {
 
-    private String name;
-    private int age;
+    private final String name;
+    private final int age;
 
     public Person(String name, int age) {
         this.name = name;