diff --git a/src/plugins/projectexplorer/projectwizardpage.cpp b/src/plugins/projectexplorer/projectwizardpage.cpp
index aa5d47be14d..648d735dd25 100644
--- a/src/plugins/projectexplorer/projectwizardpage.cpp
+++ b/src/plugins/projectexplorer/projectwizardpage.cpp
@@ -384,7 +384,7 @@ bool ProjectWizardPage::expandTree(const QModelIndex &root)
 
 void ProjectWizardPage::setBestNode(AddNewTree *tree)
 {
-    QModelIndex index = m_model->indexFromItem(tree);
+    QModelIndex index = tree ? m_model->indexFromItem(tree) : QModelIndex();
     m_ui->projectComboBox->setCurrentIndex(index);
 
     while (index.isValid()) {