diff --git a/src/plugins/projectexplorer/projectexplorer.cpp b/src/plugins/projectexplorer/projectexplorer.cpp
index ebb1bde03fc..a910e789a96 100644
--- a/src/plugins/projectexplorer/projectexplorer.cpp
+++ b/src/plugins/projectexplorer/projectexplorer.cpp
@@ -1318,10 +1318,10 @@ void ProjectExplorerPlugin::currentModeChanged(Core::IMode *mode, Core::IMode *o
 
 void ProjectExplorerPlugin::determineSessionToRestoreAtStartup()
 {
-    QStringList arguments = pluginSpec()->arguments();
     // Process command line arguments first:
-    if (arguments.contains("-lastsession"))
+    if (pluginSpec()->arguments.contains("-lastsession"))
         d->m_sessionToRestoreAtStartup = d->m_session->lastSession();
+    QStringList arguments = ExtensionSystem::PluginManager::instance()->arguments();
     if (d->m_sessionToRestoreAtStartup.isNull()) {
         QStringList sessions = d->m_session->sessions();
         // We have command line arguments, try to find a session in them