diff --git a/src/presentation/querytreemodelbase.cpp b/src/presentation/querytreemodelbase.cpp
--- a/src/presentation/querytreemodelbase.cpp
+++ b/src/presentation/querytreemodelbase.cpp
@@ -123,6 +123,7 @@
     auto roles = roleNames();
     roles.insert(ObjectRole, "object");
     roles.insert(IconNameRole, "icon");
+    roles.insert(IsDefaultRole, "default");
     setRoleNames(roles);
 }
 
diff --git a/tests/units/presentation/querytreemodeltest.cpp b/tests/units/presentation/querytreemodeltest.cpp
--- a/tests/units/presentation/querytreemodeltest.cpp
+++ b/tests/units/presentation/querytreemodeltest.cpp
@@ -110,6 +110,7 @@
         QCOMPARE(roles.value(Qt::DisplayRole), QByteArray("display"));
         QCOMPARE(roles.value(Presentation::QueryTreeModel<QColor>::ObjectRole), QByteArray("object"));
         QCOMPARE(roles.value(Presentation::QueryTreeModel<QColor>::IconNameRole), QByteArray("icon"));
+        QCOMPARE(roles.value(Presentation::QueryTreeModel<QColor>::IsDefaultRole), QByteArray("default"));
     }
 
     void shouldListTasks()