diff --git a/document/project-board-erd.svg b/document/project-board-erd.svg
index 31c2ea8..548f4e7 100644
--- a/document/project-board-erd.svg
+++ b/document/project-board-erd.svg
@@ -1,4 +1,4 @@
-
\ No newline at end of file
+
\ No newline at end of file
diff --git a/src/main/java/com/jycproject/bulletinboard/domain/UserAccount.java b/src/main/java/com/jycproject/bulletinboard/domain/UserAccount.java
index 0b7fc17..93505cf 100644
--- a/src/main/java/com/jycproject/bulletinboard/domain/UserAccount.java
+++ b/src/main/java/com/jycproject/bulletinboard/domain/UserAccount.java
@@ -11,7 +11,7 @@
@Getter
@ToString
@Table(indexes = {
- @Index(columnList = "userId"),
+ @Index(columnList = "userId", unique = true),
@Index(columnList = "email", unique = true),
@Index(columnList = "createdAt"),
@Index(columnList = "createdBy")
diff --git a/src/test/java/com/jycproject/bulletinboard/repository/JpaRepositoryTest.java b/src/test/java/com/jycproject/bulletinboard/repository/JpaRepositoryTest.java
index 030e575..e34c9ed 100644
--- a/src/test/java/com/jycproject/bulletinboard/repository/JpaRepositoryTest.java
+++ b/src/test/java/com/jycproject/bulletinboard/repository/JpaRepositoryTest.java
@@ -59,7 +59,7 @@ void givenTestData_whenSelecting_thenWorksFine() {
void givenTestData_whenInserting_thenWorksFine() {
// Given
long previousCount = articleRepository.count();
- UserAccount userAccount = userAccountRepository.save(UserAccount.of("jyc","pw",null,null,null));
+ UserAccount userAccount = userAccountRepository.save(UserAccount.of("newJyc","pw",null,null,null));
Article article = Article.of(userAccount,"new Article","new content","#spring");