diff --git a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/Stretch.java b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/Stretch.java
index bf694fa7e..73feba3dc 100644
--- a/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/Stretch.java
+++ b/navalplanner-business/src/main/java/org/navalplanner/business/planner/entities/Stretch.java
@@ -52,6 +52,9 @@ public class Stretch {
     @NotNull
     private BigDecimal amountWorkPercentage = BigDecimal.ZERO;
 
+    // Transient value
+    private boolean readOnly = false;
+
     private Stretch(LocalDate date, BigDecimal lengthPercent, BigDecimal progressPercent) {
         this.date = date;
         this.lengthPercentage = lengthPercent;
@@ -114,4 +117,12 @@ public class Stretch {
         return String.format("(%s, %s, %s) ", date, lengthPercentage, amountWorkPercentage);
     }
 
-}
+    public boolean isReadOnly() {
+        return readOnly;
+    }
+
+    public void readOnly(boolean value) {
+        readOnly = value;
+    }
+
+}
\ No newline at end of file
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/streches/StretchesFunctionController.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/streches/StretchesFunctionController.java
index 917396054..208330ab7 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/streches/StretchesFunctionController.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/streches/StretchesFunctionController.java
@@ -270,7 +270,9 @@ public class StretchesFunctionController extends GenericForwardComposer {
         @Override
         public void render(Listitem item, Object data) throws Exception {
             Stretch stretch = (Stretch) data;
+
             item.setValue(stretch);
+            item.setDisabled(stretch.isReadOnly());
 
             appendDate(item, stretch);
             appendLengthPercentage(item, stretch);
@@ -376,19 +378,26 @@ public class StretchesFunctionController extends GenericForwardComposer {
         }
 
         private void appendOperations(Listitem item, final Stretch stretch) {
-            Button button = new Button("", "/common/img/ico_borrar1.png");
-            button.setHoverImage("/common/img/ico_borrar.png");
-            button.setSclass("icono");
-            button.setTooltiptext(_("Delete"));
-
-            button.addEventListener(Events.ON_CLICK, new EventListener() {
-                @Override
-                public void onEvent(Event event) throws Exception {
-                    stretchesFunctionModel.removeStretch(stretch);
-                    reloadStretchesListAndCharts();
-                }
-            });
+            Button button;
+            if (item.isDisabled()) {
+                button = new Button("", "/common/img/ico_borrar_out.png");
+                button.setHoverImage("/common/img/ico_borrar_out.png");
+                button.setSclass("icono");
+                button.setDisabled(true);
+            } else {
+                button = new Button("", "/common/img/ico_borrar1.png");
+                button.setHoverImage("/common/img/ico_borrar.png");
+                button.setSclass("icono");
+                button.setTooltiptext(_("Delete"));
 
+                button.addEventListener(Events.ON_CLICK, new EventListener() {
+                    @Override
+                    public void onEvent(Event event) throws Exception {
+                        stretchesFunctionModel.removeStretch(stretch);
+                        reloadStretchesListAndCharts();
+                    }
+                });
+            }
             appendChild(item, button);
         }
 
diff --git a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/streches/StretchesFunctionModel.java b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/streches/StretchesFunctionModel.java
index 9ba80c951..ebc3cd889 100644
--- a/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/streches/StretchesFunctionModel.java
+++ b/navalplanner-webapp/src/main/java/org/navalplanner/web/planner/allocation/streches/StretchesFunctionModel.java
@@ -27,6 +27,7 @@ import java.math.BigDecimal;
 import java.math.RoundingMode;
 import java.text.DateFormat;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.Date;
 import java.util.List;
 
@@ -119,9 +120,27 @@ public class StretchesFunctionModel implements IStretchesFunctionModel {
     @Override
     public List<Stretch> getStretches() {
         if (stretchesFunction == null) {
-            return new ArrayList<Stretch>();
+            return Collections.emptyList();
         }
-        return stretchesFunction.getStretches();
+        return allStretches();
+    }
+
+    /**
+     * Returns an empty stretch plus the stretches from stretchesFunction
+     *
+     * @return
+     */
+    private List<Stretch> allStretches() {
+        List<Stretch> result = new ArrayList<Stretch>();
+        result.add(firstStretch());
+        result.addAll(stretchesFunction.getStretches());
+        return result;
+    }
+
+    private Stretch firstStretch() {
+        Stretch result = Stretch.create(task.getStartAsLocalDate(), BigDecimal.ZERO, BigDecimal.ZERO);
+        result.readOnly(true);
+        return result;
     }
 
     @Override