diff --git a/panels/network/connection-editor/ce-page-ip4.c b/panels/network/connection-editor/ce-page-ip4.c
index c1500f99f245ba6116819369d6b0535a6dd323b1..6de6ce607a6a58c95e523b6dc49acec796b3ce28 100644
--- a/panels/network/connection-editor/ce-page-ip4.c
+++ b/panels/network/connection-editor/ce-page-ip4.c
@@ -360,7 +360,7 @@ add_route_row (CEPageIP4   *self,
         gtk_widget_set_hexpand (widget, TRUE);
         gtk_container_add (GTK_CONTAINER (row_box), widget);
 
-        widget = gtk_entry_new ();
+        widget = GTK_WIDGET (ce_netmask_entry_new ());
         g_signal_connect_object (widget, "changed", G_CALLBACK (ce_page_changed), self, G_CONNECT_SWAPPED);
         g_signal_connect_object (widget, "activate", G_CALLBACK (ensure_empty_routes_row), self, G_CONNECT_SWAPPED);
         g_object_set_data (G_OBJECT (row), "netmask", widget);