diff --git a/backend/src/main/java/com/example/backend/core/security/UserPrincipal.java b/backend/src/main/java/com/example/backend/core/security/UserPrincipal.java
index b81ce30..d51cf25 100644
--- a/backend/src/main/java/com/example/backend/core/security/UserPrincipal.java
+++ b/backend/src/main/java/com/example/backend/core/security/UserPrincipal.java
@@ -12,7 +12,6 @@ public class UserPrincipal implements UserDetails {
     private final long id;
     private final String username;
     private final String password;
-    private final boolean isAdmin;
     private final Set<? extends GrantedAuthority> roles;
     private final boolean active;
 
@@ -20,7 +19,6 @@ public class UserPrincipal implements UserDetails {
         this.id = user.getId();
         this.username = user.getLogin();
         this.password = user.getPassword();
-        this.isAdmin = user.getIsAdmin();
         this.roles = Set.of(user.getRole());
         this.active = true;
     }
@@ -39,10 +37,6 @@ public class UserPrincipal implements UserDetails {
         return password;
     }
 
-    public boolean getIsAdmin() {
-        return isAdmin;
-    }
-
     @Override
     public Collection<? extends GrantedAuthority> getAuthorities() {
         return roles;
diff --git a/backend/src/main/java/com/example/backend/users/api/UserDTO.java b/backend/src/main/java/com/example/backend/users/api/UserDTO.java
index 8b756f7..01d359a 100644
--- a/backend/src/main/java/com/example/backend/users/api/UserDTO.java
+++ b/backend/src/main/java/com/example/backend/users/api/UserDTO.java
@@ -23,9 +23,6 @@ public class UserDTO {
     @NotNull
     private UserRole role;
 
-    @NotNull
-    private boolean isAdmin;
-
     @JsonProperty(access = JsonProperty.Access.READ_ONLY)
     public Integer getId() {
         return id;
@@ -58,12 +55,4 @@ public class UserDTO {
     public void setRole(UserRole role) {
         this.role = role;
     }
-
-    public boolean getIsAdmin() {
-        return isAdmin;
-    }
-
-    public void setIsAdmin(boolean isAdmin) {
-        this.isAdmin = isAdmin;
-    }
 }
diff --git a/backend/src/main/java/com/example/backend/users/api/UserSignupController.java b/backend/src/main/java/com/example/backend/users/api/UserSignupController.java
index b464e8e..88f40c2 100644
--- a/backend/src/main/java/com/example/backend/users/api/UserSignupController.java
+++ b/backend/src/main/java/com/example/backend/users/api/UserSignupController.java
@@ -13,6 +13,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 
 import com.example.backend.core.configurations.Constants;
 import com.example.backend.users.model.UserEntity;
+import com.example.backend.users.model.UserRole;
 import com.example.backend.users.service.UserService;
 
 import jakarta.validation.Valid;
@@ -26,17 +27,19 @@ public class UserSignupController {
     private static final String USER_ATTRIBUTE = "user";
 
     private final UserService userService;
-    private final ModelMapper modelMapper;
 
     public UserSignupController(
             UserService userService,
             ModelMapper modelMapper) {
         this.userService = userService;
-        this.modelMapper = modelMapper;
     }
 
     private UserEntity toEntity(UserSignupDTO dto) {
-        return modelMapper.map(dto, UserEntity.class);
+        final UserEntity entity = new UserEntity();
+        entity.setLogin(dto.getLogin());
+        entity.setPassword(dto.getPassword());
+        entity.setRole(dto.getIsAdmin() ? UserRole.ADMIN : UserRole.USER);
+        return entity;
     }
 
     @GetMapping
diff --git a/backend/src/main/java/com/example/backend/users/model/UserEntity.java b/backend/src/main/java/com/example/backend/users/model/UserEntity.java
index b29fc03..f6b551d 100644
--- a/backend/src/main/java/com/example/backend/users/model/UserEntity.java
+++ b/backend/src/main/java/com/example/backend/users/model/UserEntity.java
@@ -4,7 +4,6 @@ import java.util.Objects;
 
 import com.example.backend.core.model.BaseEntity;
 
-import io.micrometer.common.lang.NonNull;
 import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
 import jakarta.persistence.Table;
@@ -19,19 +18,15 @@ public class UserEntity extends BaseEntity {
     @Column(nullable = false, length = 90)
     private String password;
 
-    @NonNull
-    private boolean isAdmin;
-
     private UserRole role;
 
     public UserEntity() {
 
     }
 
-    public UserEntity(Integer id, String login, String password, boolean isAdmin) {
+    public UserEntity(Integer id, String login, String password) {
         this.login = login;
         this.password = password;
-        this.isAdmin = isAdmin;
         this.role = UserRole.USER;
     }
 
@@ -51,14 +46,6 @@ public class UserEntity extends BaseEntity {
         this.password = password;
     }
 
-    public boolean getIsAdmin() {
-        return isAdmin;
-    }
-
-    public void setIsAdmin(boolean isAdmin) {
-        this.isAdmin = isAdmin;
-    }
-
     public UserRole getRole() {
         return role;
     }
@@ -82,7 +69,6 @@ public class UserEntity extends BaseEntity {
         return Objects.equals(other.getId(), id) &&
                 Objects.equals(other.getLogin(), login) &&
                 Objects.equals(other.getRole(), role) &&
-                Objects.equals(other.getIsAdmin(), isAdmin) &&
                 Objects.equals(other.getPassword(), password);
     }
 }
diff --git a/backend/src/main/java/com/example/backend/users/service/UserService.java b/backend/src/main/java/com/example/backend/users/service/UserService.java
index d9c6a0f..8e073b0 100644
--- a/backend/src/main/java/com/example/backend/users/service/UserService.java
+++ b/backend/src/main/java/com/example/backend/users/service/UserService.java
@@ -17,7 +17,6 @@ import com.example.backend.core.configurations.Constants;
 import com.example.backend.core.errors.NotFoundException;
 import com.example.backend.core.security.UserPrincipal;
 import com.example.backend.users.model.UserEntity;
-import com.example.backend.users.model.UserRole;
 import com.example.backend.users.repository.UserRepository;
 
 @Service
@@ -59,16 +58,10 @@ public class UserService implements UserDetailsService {
         if (entity == null) {
             throw new IllegalArgumentException("Entity is null");
         }
-        entity.setLogin(null);
         checkLogin(null, entity.getLogin());
         final String password = Optional.ofNullable(entity.getPassword()).orElse("");
         entity.setPassword(
                 passwordEncoder.encode(StringUtils.hasText(password.strip()) ? password : Constants.DEFAULT_PASSWORD));
-        if (entity.getIsAdmin() == true) {
-            entity.setRole(UserRole.ADMIN);
-        } else {
-            entity.setRole(UserRole.USER);
-        }
         repository.save(entity);
         return repository.save(entity);
     }
diff --git a/backend/src/main/resources/templates/signup.html b/backend/src/main/resources/templates/signup.html
index 3218d1b..bafefbb 100644
--- a/backend/src/main/resources/templates/signup.html
+++ b/backend/src/main/resources/templates/signup.html
@@ -46,7 +46,7 @@
                 </div>
 
                 <div class="check-admin mt-4 d-flex flex-row justify-content-center mb-4">
-                    <input th:field="*{isAdmin}" class='isAdmin-check' type="checkbox" />
+                    <input th:field="*{isAdmin}" class='isAdmin-check' type="checkbox" name="isAdmin" />
                     <label for="isAdmin" class='are-you-admin'> Вы админ? </label>
                 </div>
 
diff --git a/data.mv.db b/data.mv.db
index 0b45ea5..4c50f24 100644
Binary files a/data.mv.db and b/data.mv.db differ