diff --git a/gramps/plugins/view/citationtreeview.py b/gramps/plugins/view/citationtreeview.py
index f09ac8736..c4364ff4b 100644
--- a/gramps/plugins/view/citationtreeview.py
+++ b/gramps/plugins/view/citationtreeview.py
@@ -358,6 +358,7 @@ class CitationTreeView(ListView):
+