--- a/eric6/Project/IdlCompilerDefineNameDialog.py	Mon Mar 01 17:48:43 2021 +0100
+++ b/eric6/Project/IdlCompilerDefineNameDialog.py	Tue Mar 02 17:17:09 2021 +0100
@@ -45,7 +45,7 @@
         """
         Private slot to update the enable state of the OK button.
         """
-        self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(
+        self.buttonBox.button(QDialogButtonBox.StandardButton.Ok).setEnabled(
             bool(self.nameEdit.text()))
     
     @pyqtSlot(str)