diff --git a/libreplan-business/src/main/java/org/libreplan/business/orders/entities/Order.java b/libreplan-business/src/main/java/org/libreplan/business/orders/entities/Order.java
index 1feab7cd4..7f2834c20 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/orders/entities/Order.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/orders/entities/Order.java
@@ -670,4 +670,12 @@ public class Order extends OrderLineGroup implements Comparable {
         return neededToRecalculateSumExpenses;
     }
 
+    public void calculateAndSetTotalHours() {
+        int result = 0;
+        for (OrderElement orderElement : this.getChildren()) {
+            result = result + orderElement.getWorkHours();
+        }
+        this.setTotalHours(result);
+    }
+
 }
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/SaveCommandBuilder.java b/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/SaveCommandBuilder.java
index 5545e6015..88baac59f 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/SaveCommandBuilder.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/planner/order/SaveCommandBuilder.java
@@ -371,7 +371,7 @@ public class SaveCommandBuilder {
             Order order = state.getOrder();
             generateOrderElementCodes(order);
             createAdvancePercentagesIfRequired(order);
-            calculateAndSetTotalHours(order);
+            order.calculateAndSetTotalHours();
             checkConstraintOrderUniqueCode(order);
             checkConstraintHoursGroupUniqueCode(order);
             state.synchronizeTrees();
@@ -497,14 +497,6 @@ public class SaveCommandBuilder {
                     .getNumberOfDigitsCode(EntityNameEnum.ORDER));
         }
 
-        private void calculateAndSetTotalHours(Order order) {
-            int result = 0;
-            for (OrderElement orderElement : order.getChildren()) {
-                result = result + orderElement.getWorkHours();
-            }
-            order.setTotalHours(result);
-        }
-
         private void checkConstraintOrderUniqueCode(OrderElement order) {
             OrderElement repeatedOrder;