diff --git a/nw/guimain.py b/nw/guimain.py
index e48987bc..64e0a2e0 100644
--- a/nw/guimain.py
+++ b/nw/guimain.py
@@ -965,6 +965,8 @@ class GuiMain(QMainWindow):
             logger.error("No project open")
             return
 
+        self.treeView.flushTreeOrder()
+
         dlgDetails = GuiProjectDetails(self, self.theProject)
         dlgDetails.setModal(False)
         dlgDetails.show()