--- a/eric6/Preferences/ConfigurationPages/SecurityPage.py Wed Jun 17 17:12:21 2020 +0200 +++ b/eric6/Preferences/ConfigurationPages/SecurityPage.py Wed Jun 17 20:18:54 2020 +0200 @@ -59,17 +59,16 @@ ConfigurationWidget.WebBrowserMode) """ from ..ConfigurationDialog import ConfigurationWidget - assert displayMode in ( + if displayMode in ( ConfigurationWidget.DefaultMode, ConfigurationWidget.HelpBrowserMode, ConfigurationWidget.WebBrowserMode - ) - - self.__displayMode = displayMode - - self.certificateErrorsGroup.setVisible( - displayMode == ConfigurationWidget.WebBrowserMode - ) + ): + self.__displayMode = displayMode + + self.certificateErrorsGroup.setVisible( + displayMode == ConfigurationWidget.WebBrowserMode + ) def save(self): """