diff --git a/src/main/java/com/application/munera/views/expenses/CategoriesView.java b/src/main/java/com/application/munera/views/expenses/CategoriesView.java
index 3f02f53..17dfd1c 100644
--- a/src/main/java/com/application/munera/views/expenses/CategoriesView.java
+++ b/src/main/java/com/application/munera/views/expenses/CategoriesView.java
@@ -32,8 +32,8 @@ import java.util.Optional;
 @Uses(Icon.class)
 public class CategoriesView extends Div implements BeforeEnterObserver {
 
-    private final String CATEGORY_ID = "categoryID";
-    private final String CATEGORY_EDIT_ROUTE_TEMPLATE = "categories/%s/edit";
+    private static final String CATEGORY_ID = "categoryID";
+    private static final String CATEGORY_EDIT_ROUTE_TEMPLATE = "categories/%s/edit";
 
     private final Grid<Category> grid = new Grid<>(Category.class, false);
 
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 e140c43..17634f4 100644
--- a/src/main/java/com/application/munera/views/expenses/ExpensesView.java
+++ b/src/main/java/com/application/munera/views/expenses/ExpensesView.java
@@ -41,8 +41,8 @@ import java.util.Optional;
 @Uses(Icon.class)
 public class ExpensesView extends Div implements BeforeEnterObserver {
 
-    private final String EXPENSE_ID = "expenseID";
-    private final String EXPENSE_EDIT_ROUTE_TEMPLATE = "/%s/edit";
+    private static final String EXPENSE_ID = "expenseID";
+    private static final String EXPENSE_EDIT_ROUTE_TEMPLATE = "/%s/edit";
 
     private final Grid<Expense> grid = new Grid<>(Expense.class, false);