diff --git a/source/ubl-settings-datetime.cc b/source/ubl-settings-datetime.cc
index da958d4..80aca74 100644
--- a/source/ubl-settings-datetime.cc
+++ b/source/ubl-settings-datetime.cc
@@ -307,7 +307,8 @@ bool MainWindow::focus_ntp(GdkEventFocus* event){
 
 void MainWindow::event_entrycbDhcp(){
     Glib::ustring str_dhcp = cbDhcp->get_active_text();
-    int activ_index =  cbDhcp->get_id_column();
+    int activ_index =  cbDhcp->get_active_row_number();
+    cout << activ_index << endl;
     if (str_dhcp.length()!=0){
         if (activ_index==0){
             string cmd = "/usr/bin/ubconfig set network NTPSERVERS=default";