diff --git a/src/preferences/time/TimeZoneListView.h b/src/preferences/time/TimeZoneListView.h
index 7814e844aa..87c529dee2 100644
--- a/src/preferences/time/TimeZoneListView.h
+++ b/src/preferences/time/TimeZoneListView.h
@@ -15,7 +15,7 @@
 class TimeZoneListView : public BOutlineListView {
 public:
 								TimeZoneListView(void);
-								~TimeZoneListView();
+	virtual						~TimeZoneListView();
 
 protected:
 	virtual	bool				GetToolTipAt(BPoint point, BToolTip** _tip);