diff --git a/src/calibre/gui2/ui.py b/src/calibre/gui2/ui.py
index 28fe857a6a..dffc4342c0 100644
--- a/src/calibre/gui2/ui.py
+++ b/src/calibre/gui2/ui.py
@@ -896,6 +896,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
                     print('Failed to update annotations for book from viewer, book or library not found.', file=sys.stderr)
             except Exception:
                 import traceback
+                traceback.print_exc()
                 error_dialog(self, _('Failed to update annotations'), _(
                     'Failed to update annotations in the database for the book being currently viewed.'), det_msg=traceback.format_exc(), show=True)
         elif msg.startswith('bookedited:'):