diff --git a/gramps/gui/filters/sidebar/_placesidebarfilter.py b/gramps/gui/filters/sidebar/_placesidebarfilter.py
index 04bff9642..1bade77c1 100644
--- a/gramps/gui/filters/sidebar/_placesidebarfilter.py
+++ b/gramps/gui/filters/sidebar/_placesidebarfilter.py
@@ -139,7 +139,7 @@ class PlaceSidebarFilter(SidebarFilter):
                 generic_filter.add_rule(rule)
 
             if enclosed:
-                rule = IsEnclosedBy([enclosed])
+                rule = IsEnclosedBy([enclosed, '0'])
                 generic_filter.add_rule(rule)
 
             rule = HasData([name, ptype, code], use_regex=regex)