--- a/eric6/QScintilla/MarkupProviders/ImageMarkupDialog.py Mon Mar 01 17:48:43 2021 +0100 +++ b/eric6/QScintilla/MarkupProviders/ImageMarkupDialog.py Tue Mar 02 17:17:09 2021 +0100 @@ -107,7 +107,8 @@ if self.__mode == ImageMarkupDialog.MarkDownMode: enable = enable and bool(self.altTextEdit.text()) - self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(enable) + self.buttonBox.button( + QDialogButtonBox.StandardButton.Ok).setEnabled(enable) @pyqtSlot(str) def on_imagePicker_textChanged(self, address):