--- a/eric6/Preferences/ConfigurationPages/CooperationPage.py	Mon Mar 01 17:48:43 2021 +0100
+++ b/eric6/Preferences/ConfigurationPages/CooperationPage.py	Tue Mar 02 17:17:09 2021 +0100
@@ -93,7 +93,7 @@
         """
         self.addBannedUserButton.setEnabled(
             self.__bannedUserValidator.validate(txt, len(txt))[0] ==
-            QValidator.Acceptable)
+            QValidator.State.Acceptable)
     
     @pyqtSlot()
     def on_deleteBannedUsersButton_clicked(self):