diff --git a/src/main/java/com/moneymong/domain/user/api/response/UserProfileResponse.java b/src/main/java/com/moneymong/domain/user/api/response/UserProfileResponse.java
index dee85d9..5bd20e2 100644
--- a/src/main/java/com/moneymong/domain/user/api/response/UserProfileResponse.java
+++ b/src/main/java/com/moneymong/domain/user/api/response/UserProfileResponse.java
@@ -15,7 +15,7 @@ public class UserProfileResponse {
     private String nickname;
     private String email;
     private String universityName;
-    private int grade;
+    private Integer grade;
 
     public static UserProfileResponse from(User user, UserUniversity userUniversity) {
         return UserProfileResponse.builder()
diff --git a/src/main/java/com/moneymong/domain/user/entity/UserUniversity.java b/src/main/java/com/moneymong/domain/user/entity/UserUniversity.java
index c71e49c..984d563 100644
--- a/src/main/java/com/moneymong/domain/user/entity/UserUniversity.java
+++ b/src/main/java/com/moneymong/domain/user/entity/UserUniversity.java
@@ -42,12 +42,12 @@ public class UserUniversity extends TimeBaseEntity {
     @Column
     private Integer grade;
 
-    public void update(String universityName, int grade) {
+    public void update(String universityName, Integer grade) {
         this.universityName = universityName;
         this.grade = grade;
     }
 
-    public static UserUniversity of(Long userId, String universityName, int grade) {
+    public static UserUniversity of(Long userId, String universityName, Integer grade) {
         return UserUniversity.builder()
                 .userId(userId)
                 .universityName(universityName)