diff --git a/source/ubl-settings-datetime.cc b/source/ubl-settings-datetime.cc
index 89b2d19..ac46b29 100644
--- a/source/ubl-settings-datetime.cc
+++ b/source/ubl-settings-datetime.cc
@@ -383,7 +383,7 @@ void MainWindow::event_entry_cbDhcp(){
                 txtNtpServer->set_text("");
             }
             string str_dhcp = this->call("/usr/bin/ubconfig get network NTPSERVERS");
-            if ((str_dhcp!="") && (str_dhcp!="(null)") && (str_dhcp.find("default")==std::string::npos)){
+            if ((str_dhcp.find("(null)")==std::string::npos) && (str_dhcp.find("default")==std::string::npos)){
                 str_dhcp = str_dhcp.substr(str_dhcp.find("=")+1,str_dhcp.length());
                 str_dhcp = str_dhcp.substr(0,str_dhcp.find("\n"));
                 if (str_dhcp!="dhcp" && str_dhcp!="(null)"){  
@@ -450,9 +450,11 @@ void MainWindow::calendar_show(){
 
 void MainWindow::enry_dhcp_mess(){
     string str_dhcp = this->call("/usr/bin/ubconfig get network NTPSERVERS");
-    if ((str_dhcp!="") && (str_dhcp!="(null)")){
-        cbxSynchronizeNtpGlob->set_active(1);
-        this->set_ntp_toggle_glob();
+    cout << str_dhcp << endl;
+    if (str_dhcp.find("(null)")==std::string::npos){
+        
+        cbxSynchronizeNtpGlob->set_active(true);
+        //this->set_ntp_toggle_glob();
         str_dhcp = str_dhcp.substr(str_dhcp.find("=")+1,str_dhcp.length());
         str_dhcp = str_dhcp.substr(0,str_dhcp.find("\n"));
         if (str_dhcp=="dhcp"){
@@ -482,9 +484,10 @@ void MainWindow::enry_dhcp_mess(){
         }
         }
     else{
-        cbxSynchronizeNtpGlob->set_active(0);
-        cbDhcp->set_sensitive(0);
-        txtNtpServer->set_sensitive(0);
+        cout << 2222 << endl;
+        cbxSynchronizeNtpGlob->set_active(false);
+        cbDhcp->set_sensitive(false);
+        txtNtpServer->set_sensitive(false);
     }
 }
 
@@ -602,14 +605,16 @@ void MainWindow::set_ntp_toggle_glob(){
     if (flag==false){
         system("/usr/bin/ubconfig remove network NTPSERVERS");
         cbDhcp->set_sensitive(false);
+        txtNtpServer->set_text("");
         txtNtpServer->set_sensitive(false);
+        
     }
     else{
         cbDhcp->set_sensitive(true);
-        int activ_index =  cbDhcp->get_active_row_number();
-        if (activ_index==2){
-            txtNtpServer->set_sensitive(true);
-        }
+        system("/usr/bin/ubconfig set network NTPSERVERS=dhcp");
+        cbDhcp->set_active(1);
+        txtNtpServer->set_text("");
+        txtNtpServer->set_sensitive(false);
     }
     
 }