diff --git a/domain/src/main/java/com/pinback/domain/category/entity/Category.java b/domain/src/main/java/com/pinback/domain/category/entity/Category.java
index 5e896a4..2f99866 100644
--- a/domain/src/main/java/com/pinback/domain/category/entity/Category.java
+++ b/domain/src/main/java/com/pinback/domain/category/entity/Category.java
@@ -77,7 +77,7 @@ public static Category createWithIsPublic(String name, User user, CategoryColor
 
 	private static void validateName(String name) {
 		int characterCount = TextUtil.countGraphemeClusters(name);
-		if (characterCount > 300) {
+		if (characterCount > 10) {
 			throw new CategoryNameLengthOverException();
 		}
 	}
diff --git a/infrastructure/src/test/java/com/pinback/infrastructure/category/service/CategoryColorServiceTest.java b/infrastructure/src/test/java/com/pinback/infrastructure/category/service/CategoryColorServiceTest.java
index 8778493..019be81 100644
--- a/infrastructure/src/test/java/com/pinback/infrastructure/category/service/CategoryColorServiceTest.java
+++ b/infrastructure/src/test/java/com/pinback/infrastructure/category/service/CategoryColorServiceTest.java
@@ -134,13 +134,13 @@ void getUsedColorsByUser_IndependentColorManagement() {
 		// user1은 COLOR1~COLOR5 사용
 		for (int i = 1; i <= 5; i++) {
 			CategoryColor color = CategoryColor.valueOf("COLOR" + i);
-			categoryRepository.save(Category.createWithIsPublic("user1카테고리" + i, user1, color, true));
+			categoryRepository.save(Category.createWithIsPublic("usr1카테고리" + i, user1, color, true));
 		}
 
 		// user2는 COLOR6~COLOR10 사용
 		for (int i = 6; i <= 10; i++) {
 			CategoryColor color = CategoryColor.valueOf("COLOR" + i);
-			categoryRepository.save(Category.createWithIsPublic("user2카테고리" + i, user2, color, true));
+			categoryRepository.save(Category.createWithIsPublic("usr2카테고리" + i, user2, color, true));
 		}
 
 		// when