diff --git a/source/ubl-settings-datetime.cc b/source/ubl-settings-datetime.cc
index 8e1ec81..459a472 100644
--- a/source/ubl-settings-datetime.cc
+++ b/source/ubl-settings-datetime.cc
@@ -292,8 +292,8 @@ void MainWindow::stop_ntp(){
     windowsNnpClose->hide();
     string cmd = "";
     string response = "";
-    string array_servis[8] = {"systemd-timesyncd", "chronyd", "ntp.service", "ntpdate.service",
-        "ntpd", "ptp4l", "openntpd.service", "phc2sys"};
+    string array_servis[8] = {"systemd-timesyncd", "chronyd.service", "ntp.service", "ntpdate.service",
+        "ntpd.service", "ptp4l.service", "openntpd.service", "phc2sys.service"};
     for (string &name_serive: array_servis){
         cmd = "systemctl status " + name_serive + " | grep \"Active: active\"";
         response = this->call(cmd.c_str());