diff --git a/src/calibre/gui2/library/views.py b/src/calibre/gui2/library/views.py
index 0de4ec2e28..d98a81b412 100644
--- a/src/calibre/gui2/library/views.py
+++ b/src/calibre/gui2/library/views.py
@@ -487,8 +487,9 @@ class BooksView(QTableView):  # {{{
             name = unicode(self.model().headerData(idx, Qt.Horizontal, Qt.DisplayRole) or '')
             view.column_header_context_menu = self.create_context_menu(col, name, view)
         has_context_menu = hasattr(view, 'column_header_context_menu')
-        if self.is_library_view and has_context_menu:
+        if self.is_library_view and has_context_menu and not hasattr(view.column_header_context_menu, 'added_split_book_list_entry'):
             view.column_header_context_menu.addSeparator()
+            view.column_header_context_menu.added_split_book_list_entry = True
             view.column_header_context_menu.addAction(
                 _('Un-split the book list') if self.pin_view.isVisible() else _('Split the book list'),
                 partial(self.column_header_context_handler, action='split', column=col or 'title'))