diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/TaskMilestone.java b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/TaskMilestone.java
index 6faf47b63..f55d2aec7 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/TaskMilestone.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/TaskMilestone.java
@@ -109,7 +109,7 @@ public class TaskMilestone extends TaskElement implements IValidable {
 
     @Override
     public Integer defaultWorkHours() {
-        return new Integer(0);
+        return Integer.valueOf(0);
     }
 
     @Override
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/ManageOrderElementAdvancesModel.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/ManageOrderElementAdvancesModel.java
index 320feaec2..bfe98d496 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/ManageOrderElementAdvancesModel.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/ManageOrderElementAdvancesModel.java
@@ -521,7 +521,7 @@ public class ManageOrderElementAdvancesModel implements
                     }
                     LocalDate date = advanceMeasurement.getDate();
                     if ((value != null) && (date != null)) {
-                        xymodel.addValue(title, new Long(date
+                        xymodel.addValue(title, Long.valueOf(date
                                 .toDateTimeAtStartOfDay().getMillis()), value);
                     }
                 }
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/TaskElementAdapter.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/TaskElementAdapter.java
index 2aa6952ef..cf2122ef4 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/TaskElementAdapter.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/TaskElementAdapter.java
@@ -199,7 +199,7 @@ public class TaskElementAdapter implements ITaskElementAdapter {
                 hours = orderElement.getWorkHours();
             } else {
                 advancePercentage = new BigDecimal(0);
-                hours = new Integer(0);
+                hours = Integer.valueOf(0);
             }
 
             Integer advanceHours = advancePercentage.multiply(