diff --git a/src/calibre/gui2/actions/similar_books.py b/src/calibre/gui2/actions/similar_books.py
index af350835a9..c36eb4915b 100644
--- a/src/calibre/gui2/actions/similar_books.py
+++ b/src/calibre/gui2/actions/similar_books.py
@@ -21,7 +21,8 @@ class SimilarBooksAction(InterfaceAction):
         m = QMenu(self.gui)
         for text, icon, target, shortcut in [
         (_('Books by same author'), 'user_profile.svg', 'authors', _('Alt+A')),
-        (_('Books in this series'), 'books_in_series.svg', 'series', _('Alt+S')),
+        (_('Books in this series'), 'books_in_series.svg', 'series',
+            _('Alt+Shift+S')),
         (_('Books by this publisher'), 'publisher.png', 'publisher', _('Alt+P')),
         (_('Books with the same tags'), 'tags.svg', 'tag', _('Alt+T')),]:
             ac = self.create_action(spec=(text, icon, None, shortcut),