diff --git a/src/gui_qt/graphs/graphwindow.py b/src/gui_qt/graphs/graphwindow.py
index ce40d71..ad6755f 100644
--- a/src/gui_qt/graphs/graphwindow.py
+++ b/src/gui_qt/graphs/graphwindow.py
@@ -558,16 +558,14 @@ class QGraphWindow(QtWidgets.QGraphicsView, Ui_GraphWindow):
                 elif other_item in self.graphic.items():
                     self.legend.addItem(other_item, convert(other_item.opts.get('name', ''), old='tex', new='html'))
 
-    def export_dialog(self, path=None):
+    def export_dialog(self, _=None):
         filters = 'All files (*.*);;AGR (*.agr);;SVG (*.svg);;PDF (*.pdf)'
         for imgformat in QtGui.QImageWriter.supportedImageFormats():
             str_format = imgformat.data().decode('utf-8')
             filters += ';;' + str_format.upper() + ' (*.' + str_format + ')'
 
-        if path is None:
-            path = ''
         outfile = None
-        f = FileDialog(caption='Export graphic', directory=str(path), filter=filters, mode='save')
+        f = FileDialog(caption='Export graphic', filter=filters, mode='save')
         f.setOption(FileDialog.DontConfirmOverwrite)
         mode = f.exec()
         if mode == QtWidgets.QDialog.Accepted: