diff --git a/src/calibre/gui2/library/views.py b/src/calibre/gui2/library/views.py
index c0f561beb6..fddd04cc7b 100644
--- a/src/calibre/gui2/library/views.py
+++ b/src/calibre/gui2/library/views.py
@@ -236,7 +236,7 @@ class BooksView(QTableView):  # {{{
 
         for wv in self, self.pin_view:
             if not tweaks['horizontal_scrolling_per_column']:
-                wv.setHorizontalScrollMode(self.ScrollPerPixel)
+                wv.setHorizontalScrollMode(QAbstractItemView.ScrollMode.ScrollPerPixel)
 
             wv.setEditTriggers(QAbstractItemView.EditTrigger.EditKeyPressed)
             if tweaks['doubleclick_on_library_view'] == 'edit_cell':