diff --git a/src/libs/utils/treemodel.cpp b/src/libs/utils/treemodel.cpp
index 11076d13582..4869e0d238f 100644
--- a/src/libs/utils/treemodel.cpp
+++ b/src/libs/utils/treemodel.cpp
@@ -967,6 +967,7 @@ void TreeModel::setRootItem(TreeItem *item)
     delete m_root;
     m_root = item;
     item->setModel(this);
+    emit layoutChanged();
 }
 
 void TreeModel::setHeader(const QStringList &displays)