--- a/eric6/Debugger/StartDialog.py	Mon Oct 05 19:51:55 2020 +0200
+++ b/eric6/Debugger/StartDialog.py	Tue Oct 06 17:52:44 2020 +0200
@@ -286,7 +286,7 @@
             
             from .StartHistoryEditDialog import StartHistoryEditDialog
             dlg = StartHistoryEditDialog(history, self)
-            if dlg.exec_() == QDialog.Accepted:
+            if dlg.exec() == QDialog.Accepted:
                 history = dlg.getHistory()
                 if historiesIndex == 1:
                     combo = self.ui.cmdlineCombo