diff --git a/gramps/gen/filters/_filterlist.py b/gramps/gen/filters/_filterlist.py
index 5d333e7b3..56ce5bb8d 100644
--- a/gramps/gen/filters/_filterlist.py
+++ b/gramps/gen/filters/_filterlist.py
@@ -40,6 +40,7 @@ import collections
 from ._filterparser import FilterParser
 from ..plug import BasePluginManager
 from ..constfunc import STRTYPE
+from ..const import GRAMPS_LOCALE as glocale
 
 PLUGMAN = BasePluginManager.get_instance()
 #-------------------------------------------------------------------------