diff -r da7e4df94076 -r bd743eacfbca eric6/WebBrowser/Bookmarks/BookmarksDialog.py --- a/eric6/WebBrowser/Bookmarks/BookmarksDialog.py Wed Jan 08 18:57:10 2020 +0100 +++ b/eric6/WebBrowser/Bookmarks/BookmarksDialog.py Wed Jan 08 18:58:31 2020 +0100 @@ -62,7 +62,10 @@ self.bookmarksTree.setModel(self.__proxyModel) self.bookmarksTree.setExpanded(self.__proxyModel.index(0, 0), True) fm = QFontMetrics(self.font()) - header = fm.width("m") * 40 + try: + header = fm.horizontalAdvance("m") * 40 + except AttributeError: + header = fm.width("m") * 40 self.bookmarksTree.header().resizeSection(0, header) self.bookmarksTree.header().setStretchLastSection(True) self.bookmarksTree.setContextMenuPolicy(Qt.CustomContextMenu)