--- a/eric6/MultiProject/AddProjectDialog.py	Mon Mar 01 17:48:43 2021 +0100
+++ b/eric6/MultiProject/AddProjectDialog.py	Tue Mar 02 17:17:09 2021 +0100
@@ -57,7 +57,8 @@
         self.startdir = startdir
         self.uid = ""
         
-        self.__okButton = self.buttonBox.button(QDialogButtonBox.Ok)
+        self.__okButton = self.buttonBox.button(
+            QDialogButtonBox.StandardButton.Ok)
         self.__okButton.setEnabled(False)
         
         if project is not None: