diff --git a/source/ubl-settings-datetime.cc b/source/ubl-settings-datetime.cc
index 87ca41d..9639378 100644
--- a/source/ubl-settings-datetime.cc
+++ b/source/ubl-settings-datetime.cc
@@ -122,11 +122,11 @@ int MainWindow::check_root(){
 }
 void MainWindow::lacalization(){
     txtDate->set_tooltip_text(_("Date of\nFormat: DD.MM.YYYY"));
-    txtNtpServer->set_tooltip_text(_("Enter the name of the ntp server or its ip address.\nWhen entering multiple addresses, separate them with spaces."));
+    txtNtpServer->set_tooltip_text(_("Enter the name of the ntp-server or its ip-address.\nWhen entering multiple addresses, separate them with commas."));
     lblSynchronizebChkGLob->set_text(_("Synchronize via NTP"));
-    cbDhcp->append(_("By default"));
+    cbDhcp->append(_("Default"));
     cbDhcp->append(_("DHCP"));
-    cbDhcp->append(_("Manually"));
+    cbDhcp->append(_("Manual"));
     lblDateTimeSetting->set_text(_("Local Configuration"));
     lblHead->set_text(_("Settings the date and time"));
     lblTime->set_text(_("Time"));
@@ -327,8 +327,28 @@ bool MainWindow::focus_ntp(GdkEventFocus* event){
     }
     else{
         string cmd = "";
-        cmd = "/usr/bin/ubconfig set network NTPSERVERS=" + txtNtpServer->get_text();
-        this->call(cmd.c_str());
+        string array_simvol[]={
+            "!","\"","#","$","%","^","'","*","(",")","+",":",";","=","<",">","?",
+            "@","[","]","\\","{","}","|","~", " "
+        };
+        bool flag_error = false;
+        string str_ntp = txtNtpServer->get_text();
+        for (const auto &simvol: array_simvol){
+            if (str_ntp.find(simvol)!=std::string::npos){
+                cout << simvol << 2222 << endl;
+                flag_error=true;
+                break;
+
+            }
+        }
+        if (flag_error==false){
+            cmd = "/usr/bin/ubconfig set network NTPSERVERS=\"" + str_ntp + "\"";
+            this->call(cmd.c_str());
+        }
+        else{
+            lblMessage->set_text(_("An invalid character is entered"));
+            mess_dchp->show();
+        }
         }
         
     return true;
@@ -364,7 +384,7 @@ void MainWindow::event_entry_cbDhcp(){
                 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)"){  
-                    txtNtpServer->set_text(str_dhcp);
+                    txtNtpServer->set_text("");
                 }
                 cbDhcp->set_active(activ_index);
                 }   
@@ -439,7 +459,7 @@ void MainWindow::enry_dhcp_mess(){
         }
         else if (str_dhcp=="default"){
             cbDhcp->set_active(0);
-            txtNtpServer->set_text(str_dhcp);
+            txtNtpServer->set_text("");
             txtNtpServer->set_sensitive(false);
         }
         else{
@@ -656,7 +676,7 @@ void MainWindow::append_zone_glob(){
     cbZoneGlob->set_active(0);
 }
 void MainWindow::wrapper_update_time_date(){
-    string cmd = "pidof systemd-timesyncd ntpd chronyd";
+    string cmd = "pidof systemd-timesyncd ntpd chronyd ntpdate openntpd ptp4l phc2sys";
     string response = this->call(cmd);
     if (response.length()==0){
         this->update_time_date();
diff --git a/ubl-settings-datetime.glade b/ubl-settings-datetime.glade
index 0c04dfe..32570d0 100644
--- a/ubl-settings-datetime.glade
+++ b/ubl-settings-datetime.glade
@@ -218,7 +218,7 @@
                               <attribute name="font-desc" value="URW Gothic Semi-Bold 10"/>
                               <attribute name="weight" value="bold"/>
                               <attribute name="foreground" value="#000023233232"/>
-                              <attribute name="size" value="14336"/>
+                              <attribute name="size" value="15360"/>
                             </attributes>
                           </object>
                           <packing>
diff --git a/ubl-settings-datetime_ru.po b/ubl-settings-datetime_ru.po
index 5b04ae9..caecef2 100644
--- a/ubl-settings-datetime_ru.po
+++ b/ubl-settings-datetime_ru.po
@@ -6,6 +6,9 @@
 msgid ""
 msgstr ""
 
+msgid "An invalid character is entered"
+msgstr "Введён недопустимый символ"
+
 msgid "Longyearbyen"
 msgstr "Лонгйир"
 
@@ -18,13 +21,13 @@ msgstr "Закрыть"
 msgid "Active service detected\nAutomatic time and date synchronization service detected"
 msgstr "Обнаружен активный сервис\nавтоматической синхронизации времени и даты"
 
-msgid "By default"
+msgid "Default"
 msgstr "По умолчанию"
 
 msgid "The program must be run with \nsuperuser privileges!"
 msgstr "Программа должна быть запущена с правами \nсуперпользователя!"
 
-msgid "Manually"
+msgid "Manual"
 msgstr "Вручную"
 
 msgid "Enter DHCP!"
@@ -1593,6 +1596,6 @@ msgstr "Майотта"
 msgid "BajaSur"
 msgstr "Южная Нижняя Калифорния"
 
-msgid "Enter the name of the ntp server or its ip address.\nWhen entering multiple addresses, separate them with spaces."
-msgstr "Введите имя ntp-сервера или его ip-адрес.\nПри вводе нескольких адресов, разделяйте их пробелами."
+msgid "Enter the name of the ntp-server or its ip-address.\nWhen entering multiple addresses, separate them with commas."
+msgstr "Введите имя ntp-сервера или его ip-адрес.\nПри вводе нескольких адресов, разделяйте их запятыми."