diff --git a/src/main/java/mate/academy/service/AuthenticationService.java b/src/main/java/mate/academy/service/AuthenticationService.java
index aef6b452b..4199bea67 100644
--- a/src/main/java/mate/academy/service/AuthenticationService.java
+++ b/src/main/java/mate/academy/service/AuthenticationService.java
@@ -12,8 +12,8 @@ public class AuthenticationService {
      * @return true if user by email exists and passed password is equal to user's password.
      * Return false in any other cases.
      */
+    private UserService userService = new UserService();
     public boolean login(String email, String password) {
-        UserService userService = new UserService();
         User user = userService.findByEmail(email);
         if (user != null) {
             if (user.getPassword().equals(password)) {
diff --git a/src/main/java/mate/academy/service/UserService.java b/src/main/java/mate/academy/service/UserService.java
index 958835626..5d1d79037 100644
--- a/src/main/java/mate/academy/service/UserService.java
+++ b/src/main/java/mate/academy/service/UserService.java
@@ -15,8 +15,7 @@ public class UserService {
      * Return <code>null</code> if there is no suitable user
      */
     public User findByEmail(String email) {
-        for (User user:users
-             ) {
+        for (User user:users) {
             if (user.getEmail().equals(email)) {
                 return user;
             }