--- a/eric7/WebBrowser/Bookmarks/NsHtmlWriter.py	Sun Aug 29 17:48:26 2021 +0200
+++ b/eric7/WebBrowser/Bookmarks/NsHtmlWriter.py	Sun Aug 29 17:48:44 2021 +0200
@@ -40,7 +40,7 @@
             f = fileNameOrDevice
         else:
             f = QFile(fileNameOrDevice)
-            if root is None or not f.open(QFile.WriteOnly):
+            if root is None or not f.open(QIODevice.OpenModeFlag.WriteOnly):
                 return False
         
         self.__dev = f