diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/AssignedTaskQualityFormsToOrderElementController.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/AssignedTaskQualityFormsToOrderElementController.java
index 471c4f9a3..c861b0ded 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/AssignedTaskQualityFormsToOrderElementController.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/AssignedTaskQualityFormsToOrderElementController.java
@@ -217,6 +217,13 @@ public class AssignedTaskQualityFormsToOrderElementController extends
     }
 
     public void deleteTaskQualityForm(TaskQualityForm taskQualityForm) {
+        try {
+            assignedTaskQualityFormsToOrderElementModel
+                    .removeAdvanceAssignmentIfNeeded(taskQualityForm);
+        } catch (ValidationException e) {
+            showInformativeMessage(e.getMessage());
+            return;
+        }
         assignedTaskQualityFormsToOrderElementModel
                 .deleteTaskQualityForm(taskQualityForm);
         reloadTaskQualityForms();
@@ -291,10 +298,14 @@ public class AssignedTaskQualityFormsToOrderElementController extends
                                     assignedTaskQualityFormsToOrderElementModel
                                             .addAdvanceAssignmentIfNeeded(taskQualityForm);
                                 } else {
-                                    assignedTaskQualityFormsToOrderElementModel
+                                    try {
+                                        assignedTaskQualityFormsToOrderElementModel
                                             .removeAdvanceAssignmentIfNeeded(taskQualityForm);
+                                    } catch (ValidationException e) {
+                                        showInformativeMessage(e.getMessage());
+                                        return;
+                                    }
                                 }
-
                                 taskQualityForm.setReportAdvance(value);
                             } catch (DuplicateValueTrueReportGlobalAdvanceException e) {
                                 throw new RuntimeException(e);
@@ -316,6 +327,15 @@ public class AssignedTaskQualityFormsToOrderElementController extends
         }
     }
 
+    private void showInformativeMessage(String message) {
+        try {
+            Messagebox.show(message, _("Delete"), Messagebox.OK,
+                    Messagebox.ERROR);
+        } catch (InterruptedException e) {
+            messagesForUser.showMessage(Level.ERROR, e.getMessage());
+        }
+    }
+
     private void appendDetails(Row row, TaskQualityForm taskQualityForm) {
         Detail details = new Detail();
         details.setParent(row);
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/AssignedTaskQualityFormsToOrderElementModel.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/AssignedTaskQualityFormsToOrderElementModel.java
index 4c17f018b..21e9d2e69 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/AssignedTaskQualityFormsToOrderElementModel.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/orders/AssignedTaskQualityFormsToOrderElementModel.java
@@ -152,7 +152,16 @@ public class AssignedTaskQualityFormsToOrderElementModel implements
 
     @Override
     public void deleteTaskQualityForm(TaskQualityForm taskQualityForm) {
-        orderElement.removeTaskQualityForm(taskQualityForm);
+            orderElement.removeTaskQualityForm(taskQualityForm);
+    }
+
+    private AdvanceAssignment getAdvanceAssignment(
+            TaskQualityForm taskQualityForm) {
+        AdvanceType advanceType = taskQualityForm.getQualityForm()
+                .getAdvanceType();
+        advanceTypeDAO.reattach(advanceType);
+        return taskQualityForm.getOrderElement()
+                .getDirectAdvanceAssignmentByType(advanceType);
     }
 
     @Override
@@ -309,19 +318,25 @@ public class AssignedTaskQualityFormsToOrderElementModel implements
 
     @Override
     @Transactional(readOnly = true)
-    public void removeAdvanceAssignmentIfNeeded(TaskQualityForm taskQualityForm) {
-        AdvanceType advanceType = taskQualityForm.getQualityForm()
-                .getAdvanceType();
-        advanceTypeDAO.reattach(advanceType);
-        AdvanceAssignment advanceAssignment = taskQualityForm.getOrderElement()
-                .getDirectAdvanceAssignmentByType(advanceType);
-
+    public void removeAdvanceAssignmentIfNeeded(TaskQualityForm taskQualityForm)
+            throws ValidationException {
+        AdvanceAssignment advanceAssignment = this
+                .getAdvanceAssignment(taskQualityForm);
         if (advanceAssignment != null) {
-            taskQualityForm.getOrderElement().removeAdvanceAssignment(
+            if (advanceAssignment.getReportGlobalAdvance()) {
+                showMessageDeleteSpread();
+            } else {
+                taskQualityForm.getOrderElement().removeAdvanceAssignment(
                     advanceAssignment);
+            }
         }
     }
 
+    private void showMessageDeleteSpread() throws ValidationException {
+        throw new ValidationException(
+                _("the operation does not perform because the task has progress reports that is spread associated with this quality form."));
+    }
+
     @Override
     public void updateAdvancesIfNeeded() {
         if (orderElement != null) {
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 b0c506e46..a9d8c0d5d 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
@@ -150,10 +150,12 @@ public class ManageOrderElementAdvancesModel implements
         fillVariables();
         for (AdvanceAssignment advance : listAdvanceAssignmentsCopy) {
             if ((!listAdvanceAssignments.contains(advance))
-                    && (advance instanceof DirectAdvanceAssignment)) {
+                    && (advance instanceof DirectAdvanceAssignment)
+                    && (!advance.getAdvanceType().isQualityForm())) {
                 listAdvanceAssignments.add(advance);
             }
         }
+
     }
 
     @Override
@@ -273,7 +275,7 @@ public class ManageOrderElementAdvancesModel implements
         for (IndirectAdvanceAssignment each : orderElement
                 .getIndirectAdvanceAssignments()) {
                 this.listAdvanceAssignments.add(each);
-            }
+        }
     }
 
     @Override
diff --git a/navalplanner-webapp/src/main/webapp/orders/_listOrderElementAdvances.zul b/navalplanner-webapp/src/main/webapp/orders/_listOrderElementAdvances.zul
index 999c56a6f..5bd4026c5 100644
--- a/navalplanner-webapp/src/main/webapp/orders/_listOrderElementAdvances.zul
+++ b/navalplanner-webapp/src/main/webapp/orders/_listOrderElementAdvances.zul
@@ -20,7 +20,7 @@
 -->
 
 <vbox id="${arg.id}"
-	apply="org.navalplanner.web.orders.ManageOrderElementAdvancesController" width="100%">
+    apply="org.navalplanner.web.orders.ManageOrderElementAdvancesController" width="100%">
     <panel title="${i18n:_('Progress assignments')}" border="normal">
         <panelchildren>
             <vbox id="messagesContainerAdvances" />