diff --git a/src/key-tree-item.cpp b/src/key-tree-item.cpp
index 070537e..bfc5788 100644
--- a/src/key-tree-item.cpp
+++ b/src/key-tree-item.cpp
@@ -24,10 +24,12 @@
 namespace ndn {
 namespace ncc {
 
-KeyTreeItem::KeyTreeItem(const QVariant& name, const QVariant& data, Type type, KeyTreeItem* parent)
+KeyTreeItem::KeyTreeItem(const QVariant& name, const QVariant& data,
+                         Type type, KeyTreeItem* parent)
   : m_name(name)
   , m_data(data)
   , m_type(type)
+  , m_isDefault(false)
   , m_parentItem(parent)
 {
 }
@@ -38,6 +40,12 @@
 }
 
 void
+KeyTreeItem::setDefault(bool isDefault)
+{
+  m_isDefault = isDefault;
+}
+
+void
 KeyTreeItem::setParent(KeyTreeItem* parent)
 {
   m_parentItem = parent;