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 b04f93b9d..0c72dd8c2 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/data/DefaultFundamentalProperties.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/data/DefaultFundamentalProperties.java
@@ -272,4 +272,9 @@ 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 b814e6fdc..99e0b9b0b 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/data/ITaskFundamentalProperties.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/data/ITaskFundamentalProperties.java
@@ -109,4 +109,6 @@ 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 09197a64b..17bbba98d 100644
--- a/ganttzk/src/main/java/org/zkoss/ganttz/data/Task.java
+++ b/ganttzk/src/main/java/org/zkoss/ganttz/data/Task.java
@@ -460,4 +460,8 @@ 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 ade32b1c6..aa86d4430 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
@@ -739,4 +739,8 @@ 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 8865e957d..d61f80339 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
@@ -1112,6 +1112,11 @@ public class TaskElementAdapter {
                 return taskElement.belongsClosedProject();
             }
 
+            @Override
+            public boolean isRoot() {
+                return taskElement.isRoot();
+            }
+
         }
 
         @Override