diff --git a/src/main/java/com/indexzero/finals/config/SecurityConfig.java b/src/main/java/com/indexzero/finals/config/SecurityConfig.java
index 163f2c4..171298b 100644
--- a/src/main/java/com/indexzero/finals/config/SecurityConfig.java
+++ b/src/main/java/com/indexzero/finals/config/SecurityConfig.java
@@ -27,17 +27,27 @@ public class SecurityConfig {
     public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
         http
                 .authorizeHttpRequests((authorize) -> authorize
+                        // Swagger and OpenAPI Docs
                         .requestMatchers("/v3/api-docs/**").permitAll()
+                        .requestMatchers("/swagger-ui/**").permitAll()
+
+                        // EmployeeController for everyone
                         .requestMatchers("/api/employee/login").authenticated()
                         .requestMatchers("/api/employee/profile").authenticated()
                         .requestMatchers("/api/employee/open").authenticated()
-                        .requestMatchers("/api/entrance").authenticated()
-                        .requestMatchers("/api/entrance/all").hasAuthority("ADMIN")
+                        // EmployeeController for admins
                         .requestMatchers("/api/employee/{login}/delete").hasAuthority("ADMIN")
                         .requestMatchers("/api/employee/{login}/{state}").hasAuthority("ADMIN")
-                        .requestMatchers("/api/employee/all").hasAuthority("ADMIN")
                         .requestMatchers("/api/employee/{login}").hasAuthority("ADMIN")
-                        .requestMatchers("/swagger-ui/**").permitAll()
+                        .requestMatchers("/api/employee/all").hasAuthority("ADMIN")
+
+                        // Entrance for everyone
+                        .requestMatchers("/api/entrance").authenticated()
+                        .requestMatchers("/api/entrance/last").authenticated()
+                        // Entrance for admins
+                        .requestMatchers("/api/entrance/all").hasAuthority("ADMIN")
+                        .requestMatchers("/api/entrance/{login}").hasAuthority("ADMIN")
+
                         .anyRequest().authenticated()
                 )
                 .httpBasic(Customizer.withDefaults()).csrf(csrf -> csrf
diff --git a/src/main/java/com/indexzero/finals/entity/Code.java b/src/main/java/com/indexzero/finals/entity/Code.java
index c7730f0..8653d35 100644
--- a/src/main/java/com/indexzero/finals/entity/Code.java
+++ b/src/main/java/com/indexzero/finals/entity/Code.java
@@ -17,12 +17,12 @@ public class Code {
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private long id;
 
-    @Column(name = "value")
+    @Column(name = "value", nullable = false)
     private long value;
 
-    @Column(name = "name")
+    @Column(name = "name", nullable = false)
     String name;
 
-    @Column(name = "entry_type")
+    @Column(name = "entry_type", nullable = false)
     String entryType;
 }
diff --git a/src/main/java/com/indexzero/finals/entity/Employee.java b/src/main/java/com/indexzero/finals/entity/Employee.java
index f313e02..e3ad45f 100644
--- a/src/main/java/com/indexzero/finals/entity/Employee.java
+++ b/src/main/java/com/indexzero/finals/entity/Employee.java
@@ -33,10 +33,10 @@ public class Employee implements UserDetails {
     @Column(name = "position", nullable = false)
     private String position;
 
-    @Column(name = "photo_url")
+    @Column(name = "photo_url", nullable = false)
     private String photoUrl;
 
-    @Column(name = "is_enabled")
+    @Column(name = "is_enabled", nullable = false)
     Boolean isQREnabled;
 
     @ManyToMany(fetch = FetchType.EAGER)
diff --git a/src/main/java/com/indexzero/finals/repository/EmployeeRepository.java b/src/main/java/com/indexzero/finals/repository/EmployeeRepository.java
index a4ba5d1..54d68ab 100644
--- a/src/main/java/com/indexzero/finals/repository/EmployeeRepository.java
+++ b/src/main/java/com/indexzero/finals/repository/EmployeeRepository.java
@@ -5,6 +5,5 @@ import org.springframework.data.jpa.repository.JpaRepository;
 
 
 public interface EmployeeRepository extends JpaRepository<Employee, Long> {
-    boolean existsByLogin(String login);
     Employee findByLogin(String login);
 }
diff --git a/src/test/java/com/indexzero/finals/NtoFinalsApplicationTests.java b/src/test/java/com/indexzero/finals/EmployeeControllerTests.java
similarity index 76%
rename from src/test/java/com/indexzero/finals/NtoFinalsApplicationTests.java
rename to src/test/java/com/indexzero/finals/EmployeeControllerTests.java
index 57f8f92..cfe3993 100644
--- a/src/test/java/com/indexzero/finals/NtoFinalsApplicationTests.java
+++ b/src/test/java/com/indexzero/finals/EmployeeControllerTests.java
@@ -13,7 +13,7 @@ import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.
 
 @SpringBootTest
 @AutoConfigureMockMvc
-class NtoFinalsApplicationTests {
+class EmployeeControllerTests {
 
     @Autowired
     private MockMvc mockMvc;
@@ -29,4 +29,15 @@ class NtoFinalsApplicationTests {
         );
     }
 
+    @Test
+    void userLoginWrong() throws Exception {
+        this.mockMvc.perform(
+                        post("/api/employee/login")
+                                .with(httpBasic("pivanov", "HelloWorld12345")))
+                .andDo(print())
+                .andExpect(status().isUnauthorized());
+    }
+
+
+
 }