--- a/eric6/Plugins/VcsPlugins/vcsMercurial/HisteditExtension/HgHisteditConfigDialog.py Mon Mar 01 17:48:43 2021 +0100 +++ b/eric6/Plugins/VcsPlugins/vcsMercurial/HisteditExtension/HgHisteditConfigDialog.py Tue Mar 02 17:17:09 2021 +0100 @@ -73,7 +73,8 @@ elif self.bookmarkButton.isChecked(): enabled = enabled and bool(self.bookmarkCombo.currentText()) - self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(enabled) + self.buttonBox.button( + QDialogButtonBox.StandardButton.Ok).setEnabled(enabled) @pyqtSlot(bool) def on_defaultButton_toggled(self, checked):