diff --git a/src/main/java/com/example/nto/config/WebSecurityConfig.java b/src/main/java/com/example/nto/config/WebSecurityConfig.java
index c34f180..4aba227 100644
--- a/src/main/java/com/example/nto/config/WebSecurityConfig.java
+++ b/src/main/java/com/example/nto/config/WebSecurityConfig.java
@@ -6,7 +6,6 @@ import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
-import org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration;
 import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
 import org.springframework.security.core.userdetails.UserDetailsService;
 import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
diff --git a/src/main/java/com/example/nto/controller/EmployeeController.java b/src/main/java/com/example/nto/controller/EmployeeController.java
index fa6ef78..ba39c0f 100644
--- a/src/main/java/com/example/nto/controller/EmployeeController.java
+++ b/src/main/java/com/example/nto/controller/EmployeeController.java
@@ -9,8 +9,6 @@ import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.Authentication;
 import org.springframework.web.bind.annotation.*;
-
-import java.time.LocalDateTime;
 import java.util.List;
 
 @RestController
diff --git a/src/main/java/com/example/nto/dto/AuthorityDTO.java b/src/main/java/com/example/nto/dto/AuthorityDTO.java
deleted file mode 100644
index 4f2a227..0000000
--- a/src/main/java/com/example/nto/dto/AuthorityDTO.java
+++ /dev/null
@@ -1,8 +0,0 @@
-package com.example.nto.dto;
-
-import lombok.Data;
-
-@Data
-public class AuthorityDTO {
-    private String authority;
-}
diff --git a/src/main/java/com/example/nto/entity/Employee.java b/src/main/java/com/example/nto/entity/Employee.java
index 32e4814..518fccc 100644
--- a/src/main/java/com/example/nto/entity/Employee.java
+++ b/src/main/java/com/example/nto/entity/Employee.java
@@ -1,14 +1,10 @@
 package com.example.nto.entity;
 
-import lombok.AllArgsConstructor;
 import lombok.Data;
-import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.userdetails.UserDetails;
 
 import javax.persistence.*;
 import java.time.LocalDateTime;
-import java.util.Collection;
-import java.util.List;
 import java.util.Set;
 
 @Data
diff --git a/src/main/java/com/example/nto/service/impl/EmployeeServiceImpl.java b/src/main/java/com/example/nto/service/impl/EmployeeServiceImpl.java
index 918c2e1..d6ff5eb 100644
--- a/src/main/java/com/example/nto/service/impl/EmployeeServiceImpl.java
+++ b/src/main/java/com/example/nto/service/impl/EmployeeServiceImpl.java
@@ -18,7 +18,6 @@ import java.util.List;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
-import static org.springframework.util.Assert.hasText;
 
 @Service
 @RequiredArgsConstructor
diff --git a/src/main/java/com/example/nto/service/impl/UserDetailsServiceImpl.java b/src/main/java/com/example/nto/service/impl/UserDetailsServiceImpl.java
index 926ee00..9e90e36 100644
--- a/src/main/java/com/example/nto/service/impl/UserDetailsServiceImpl.java
+++ b/src/main/java/com/example/nto/service/impl/UserDetailsServiceImpl.java
@@ -3,7 +3,6 @@ package com.example.nto.service.impl;
 import com.example.nto.entity.Employee;
 import com.example.nto.repository.EmployeeRepository;
 import lombok.RequiredArgsConstructor;
-import org.springframework.security.core.userdetails.User;
 import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.security.core.userdetails.UserDetailsService;
 import org.springframework.security.core.userdetails.UsernameNotFoundException;
diff --git a/src/main/java/com/example/nto/util/AuthorityMapper.java b/src/main/java/com/example/nto/util/AuthorityMapper.java
deleted file mode 100644
index fb5b9de..0000000
--- a/src/main/java/com/example/nto/util/AuthorityMapper.java
+++ /dev/null
@@ -1,17 +0,0 @@
-package com.example.nto.util;
-
-import com.example.nto.dto.AuthorityDTO;
-import com.example.nto.dto.EnterDTO;
-import com.example.nto.entity.Authority;
-import com.example.nto.entity.Enter;
-import lombok.experimental.UtilityClass;
-
-@UtilityClass
-public class AuthorityMapper {
-    public AuthorityDTO convertToDTO(Authority authority){
-        AuthorityDTO authorityDTO = new AuthorityDTO();
-        authorityDTO.setAuthority(authority.getAuthority());
-
-        return authorityDTO;
-    }
-}
diff --git a/src/main/java/com/example/nto/util/EmployeeMapper.java b/src/main/java/com/example/nto/util/EmployeeMapper.java
index 70e7939..14e9537 100644
--- a/src/main/java/com/example/nto/util/EmployeeMapper.java
+++ b/src/main/java/com/example/nto/util/EmployeeMapper.java
@@ -1,6 +1,5 @@
 package com.example.nto.util;
 
-import com.example.nto.dto.AuthorityDTO;
 import com.example.nto.dto.EmployeeDTO;
 import com.example.nto.entity.Employee;
 import lombok.experimental.UtilityClass;