1 files changed, 2 insertions, 0 deletions
diff --git a/src/plugins/projectexplorer/projectexplorer.cpp b/src/plugins/projectexplorer/projectexplorer.cpp
index d76271c07f..439e5f03a5 100644
--- a/src/plugins/projectexplorer/projectexplorer.cpp
+++ b/src/plugins/projectexplorer/projectexplorer.cpp
@@ -2772,6 +2772,8 @@ QPair<bool, QString> ProjectExplorerPluginPrivate::buildSettingsEnabledForSessio
 
 bool ProjectExplorerPlugin::coreAboutToClose()
 {
+    if (!m_instance)
+        return true;
     if (BuildManager::isBuilding()) {
         QMessageBox box;
         QPushButton *closeAnyway = box.addButton(tr("Cancel Build && Close"), QMessageBox::AcceptRole);