diff --git a/src/nm-route-manager.c b/src/nm-route-manager.c
index 5986196fc5..a6763a2f83 100644
--- a/src/nm-route-manager.c
+++ b/src/nm-route-manager.c
@@ -632,8 +632,8 @@ nm_route_manager_ip6_route_sync (NMRouteManager *self, int ifindex, const GArray
 gboolean
 nm_route_manager_route_flush (NMRouteManager *self, int ifindex)
 {
-	return    nm_route_manager_ip4_route_sync (self, ifindex, NULL, TRUE)
-	       && nm_route_manager_ip6_route_sync (self, ifindex, NULL, TRUE);
+	return    nm_route_manager_ip4_route_sync (self, ifindex, NULL, FALSE)
+	       && nm_route_manager_ip6_route_sync (self, ifindex, NULL, FALSE);
 }
 
 /*********************************************************************************************/