diff --git a/cakk-domain/mysql/src/test/java/com/cakk/domain/entity/user/BusinessInformationTest.java b/cakk-domain/mysql/src/test/java/com/cakk/domain/entity/user/BusinessInformationTest.java
index a518d63d..9fe2a6ba 100644
--- a/cakk-domain/mysql/src/test/java/com/cakk/domain/entity/user/BusinessInformationTest.java
+++ b/cakk-domain/mysql/src/test/java/com/cakk/domain/entity/user/BusinessInformationTest.java
@@ -18,7 +18,7 @@ class BusinessInformationTest extends DomainTest {
 
 	private CakeShop getCakeShopFixture() {
 		return getConstructorMonkey().giveMeBuilder(CakeShop.class)
-			.set("shopName", Arbitraries.strings().withCharRange('a', 'z').ofMaxLength(30))
+			.set("shopName", Arbitraries.strings().withCharRange('a', 'z').ofMinLength(1).ofMaxLength(30))
 			.set("location", supplyPointBy(Arbitraries.doubles().sample(), Arbitraries.doubles().sample()))
 			.sample();
 	}