diff --git a/plugins/projectmanagerview/projecttreeview.h b/plugins/projectmanagerview/projecttreeview.h
--- a/plugins/projectmanagerview/projecttreeview.h
+++ b/plugins/projectmanagerview/projecttreeview.h
@@ -60,7 +60,7 @@
         void slotActivated( const QModelIndex &index );
         void popupContextMenu( const QPoint &pos );
         void openProjectConfig();
-        void saveState();
+        void saveState(KDevelop::IProject* project = nullptr);
         void restoreState(KDevelop::IProject* project = nullptr);
         void aboutToShutdown();
 
diff --git a/plugins/projectmanagerview/projecttreeview.cpp b/plugins/projectmanagerview/projecttreeview.cpp
--- a/plugins/projectmanagerview/projecttreeview.cpp
+++ b/plugins/projectmanagerview/projecttreeview.cpp
@@ -383,19 +383,19 @@
     }
 }
 
-void ProjectTreeView::saveState()
+void ProjectTreeView::saveState(IProject* project)
 {
     KConfigGroup configGroup( ICore::self()->activeSession()->config(), settingsConfigGroup );
 
     ProjectModelSaver saver;
+    saver.setProject( project );
     saver.setView( this );
     saver.saveState( configGroup );
 }
 
 void ProjectTreeView::restoreState(IProject* project)
 {
     KConfigGroup configGroup( ICore::self()->activeSession()->config(), settingsConfigGroup );
-
     ProjectModelSaver saver;
     saver.setProject( project );
     saver.setView( this );