diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/data/DefaultFundamentalProperties.java b/ganttzk/src/main/java/org/zkoss/ganttz/data/DefaultFundamentalProperties.java
index 046f52f18..d85fc6233 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/data/DefaultFundamentalProperties.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/data/DefaultFundamentalProperties.java
@@ -284,4 +284,9 @@ public class DefaultFundamentalProperties implements ITaskFundamentalProperties
         return false;
     }
 
+    @Override
+    public boolean isRoot() {
+        return false;
+    }
+
 }
diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/data/ITaskFundamentalProperties.java b/ganttzk/src/main/java/org/zkoss/ganttz/data/ITaskFundamentalProperties.java
index 2952a9af3..0df1bf198 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/data/ITaskFundamentalProperties.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/data/ITaskFundamentalProperties.java
@@ -118,4 +118,6 @@ public interface ITaskFundamentalProperties {
 
     public boolean belongsClosedProject();
 
+    public boolean isRoot();
+
 }
diff --git a/ganttzk/src/main/java/org/zkoss/ganttz/data/Task.java b/ganttzk/src/main/java/org/zkoss/ganttz/data/Task.java
index 2600fcf15..ea2cdb1bd 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/data/Task.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/data/Task.java
@@ -497,4 +497,8 @@ public abstract class Task implements ITaskFundamentalProperties {
         return fundamentalProperties.belongsClosedProject();
     }
 
+    public boolean isRoot() {
+        return fundamentalProperties.isRoot();
+    }
+
 }
diff --git a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskElement.java b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskElement.java
index 81c57fca5..3677ab2c5 100644
--- a/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskElement.java
+++ b/libreplan-business/src/main/java/org/libreplan/business/planner/entities/TaskElement.java
@@ -721,4 +721,8 @@ public abstract class TaskElement extends BaseEntity {
         setAdvancePercentage(getOrderElement().getAdvancePercentage());
     }
 
+    public Boolean isRoot() {
+        return (this.getParent() == null);
+    }
+
 }
diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/planner/TaskElementAdapter.java b/libreplan-webapp/src/main/java/org/libreplan/web/planner/TaskElementAdapter.java
index 3b424f173..8f8aa672e 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/planner/TaskElementAdapter.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/planner/TaskElementAdapter.java
@@ -1135,6 +1135,11 @@ public class TaskElementAdapter {
                 return taskElement.belongsClosedProject();
             }
 
+            @Override
+            public boolean isRoot() {
+                return taskElement.isRoot();
+            }
+
         }
 
         @Override