--- a/eric6/Preferences/ConfigurationPages/WebBrowserAppearancePage.py Wed Jun 17 17:12:21 2020 +0200 +++ b/eric6/Preferences/ConfigurationPages/WebBrowserAppearancePage.py Wed Jun 17 20:18:54 2020 +0200 @@ -121,12 +121,11 @@ ConfigurationWidget.TrayStarterMode) """ from ..ConfigurationDialog import ConfigurationWidget - assert displayMode in ( + if displayMode in ( ConfigurationWidget.DefaultMode, ConfigurationWidget.WebBrowserMode, - ) - - self.__displayMode = displayMode + ): + self.__displayMode = displayMode def save(self): """