diff --git a/src/preferences/time/ZoneView.cpp b/src/preferences/time/ZoneView.cpp
index 50d2b92431..e7dfd90b50 100644
--- a/src/preferences/time/ZoneView.cpp
+++ b/src/preferences/time/ZoneView.cpp
@@ -92,7 +92,8 @@ TimeZoneView::CheckCanRevert()
 
 TimeZoneView::~TimeZoneView()
 {
-	delete fToolTip;
+	if (fToolTip)
+		fToolTip->ReleaseReference();
 }