diff --git a/gramps/gui/clipboard.py b/gramps/gui/clipboard.py
index b4b1bc59e..83a3859c6 100644
--- a/gramps/gui/clipboard.py
+++ b/gramps/gui/clipboard.py
@@ -54,6 +54,7 @@ from gramps.gen.lib import NoteType
 from gramps.gen.datehandler import get_date
 from .display import display_help
 from .managedwindow import ManagedWindow
+from gramps.gen.errors import WindowActiveError
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.sgettext
 from gramps.gen.constfunc import mac