diff --git a/src/main/kotlin/com/example/kotlinonspringboot/domain/usecase/EmployeeRegisterUseCase.kt b/src/main/kotlin/com/example/kotlinonspringboot/domain/usecase/EmployeeRegisterUseCase.kt
index 04dd91a..1cfab65 100644
--- a/src/main/kotlin/com/example/kotlinonspringboot/domain/usecase/EmployeeRegisterUseCase.kt
+++ b/src/main/kotlin/com/example/kotlinonspringboot/domain/usecase/EmployeeRegisterUseCase.kt
@@ -7,6 +7,7 @@ interface EmployeeRegisterUseCase {
     /**
      * 登録ユースケース
      * @param unRegisteredEmployee 未登録社員
+     * @return 常にtrue
      */
     fun register(unRegisteredEmployee: Employee.UnRegisteredEmployee): Boolean
 }
diff --git a/src/test/kotlin/com/example/kotlinonspringboot/presentation/controller/RegisterInEmployeeUpdateControllerTest.kt b/src/test/kotlin/com/example/kotlinonspringboot/presentation/controller/RegisterInEmployeeUpdateControllerTest.kt
index 39aaccd..d38f372 100644
--- a/src/test/kotlin/com/example/kotlinonspringboot/presentation/controller/RegisterInEmployeeUpdateControllerTest.kt
+++ b/src/test/kotlin/com/example/kotlinonspringboot/presentation/controller/RegisterInEmployeeUpdateControllerTest.kt
@@ -2,7 +2,11 @@ package com.example.kotlinonspringboot.presentation.controller
 
 import com.example.kotlinonspringboot.domain.model.EmployeeServiceException
 import com.example.kotlinonspringboot.domain.usecase.EmployeeRegisterUseCase
-import org.junit.jupiter.api.*
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Nested
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.TestInstance
 import org.junit.jupiter.params.ParameterizedTest
 import org.junit.jupiter.params.provider.Arguments
 import org.junit.jupiter.params.provider.MethodSource