diff --git a/backend/src/main/java/de/hft/geotime/user/TimetrackUser.java b/backend/src/main/java/de/hft/geotime/user/TimetrackUser.java
index e02de32..8dcc7c7 100644
--- a/backend/src/main/java/de/hft/geotime/user/TimetrackUser.java
+++ b/backend/src/main/java/de/hft/geotime/user/TimetrackUser.java
@@ -5,7 +5,6 @@ import de.hft.geotime.timetrackaccount.TimetrackAccount;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
-import org.hibernate.validator.constraints.UniqueElements;
 
 import javax.persistence.*;
 import java.util.List;
diff --git a/backend/src/main/java/de/hft/geotime/user/UserController.java b/backend/src/main/java/de/hft/geotime/user/UserController.java
index 40f5df8..d467ea8 100644
--- a/backend/src/main/java/de/hft/geotime/user/UserController.java
+++ b/backend/src/main/java/de/hft/geotime/user/UserController.java
@@ -10,8 +10,8 @@ import org.springframework.web.bind.annotation.*;
 @RequestMapping("/user")
 public class UserController {
 
-    private TimetrackUserRepository userRepository;
-    private BCryptPasswordEncoder bCryptPasswordEncoder;
+    private final TimetrackUserRepository userRepository;
+    private final BCryptPasswordEncoder bCryptPasswordEncoder;
 
     public UserController(TimetrackUserRepository userRepository, BCryptPasswordEncoder bCryptPasswordEncoder) {
         this.userRepository = userRepository;