diff --git a/src/main/java/com/application/munera/views/dashboard/DashboardView.java b/src/main/java/com/application/munera/views/dashboard/DashboardView.java
index 57300f8..dca69ac 100644
--- a/src/main/java/com/application/munera/views/dashboard/DashboardView.java
+++ b/src/main/java/com/application/munera/views/dashboard/DashboardView.java
@@ -220,7 +220,7 @@ public class DashboardView extends Div {
                 "} " +
                 "} " +
                 "}, " +
-                "series: " + seriesData.toString() + " " +
+                "series: " + seriesData + " " +
                 "});";
     }
 
diff --git a/src/main/java/com/application/munera/views/expenses/ExpensesView.java b/src/main/java/com/application/munera/views/expenses/ExpensesView.java
index b8ea8a3..ad7890d 100644
--- a/src/main/java/com/application/munera/views/expenses/ExpensesView.java
+++ b/src/main/java/com/application/munera/views/expenses/ExpensesView.java
@@ -60,7 +60,7 @@ public class ExpensesView extends Div implements BeforeEnterObserver {
     private final BeanValidationBinder<Expense> binder;
 
     private Expense expense;
-    private Long userId;
+    private final Long userId;
 
     private final ExpenseService expenseService;
     private final PersonFacade personFacade;
diff --git a/src/main/java/com/application/munera/views/people/PeopleView.java b/src/main/java/com/application/munera/views/people/PeopleView.java
index 5408cb1..956ed06 100644
--- a/src/main/java/com/application/munera/views/people/PeopleView.java
+++ b/src/main/java/com/application/munera/views/people/PeopleView.java
@@ -57,8 +57,8 @@ public class PeopleView extends Div implements BeforeEnterObserver {
     private final BeanValidationBinder<Person> binder;
 
     private Person person;
-    private User loggedUser;
-    private Long userId;
+    private final User loggedUser;
+    private final Long userId;
     private final UserService userService;
     private final PersonFacade personFacade;
     private final ExpenseFacade expenseFacade;