diff --git a/Form1.cs b/Form1.cs
index 5e5c330..08185e7 100644
--- a/Form1.cs
+++ b/Form1.cs
@@ -33,7 +33,7 @@ private void button1_Click(object sender, EventArgs e)
         {
             using (Process process = new Process())
             {
-                var psi = new ProcessStartInfo("shutdown", "/s /t 15");
+                var psi = new ProcessStartInfo("shutdown", "/s /t 0");
                 psi.CreateNoWindow = true;
                 psi.UseShellExecute = false;
                 Process.Start(psi);
@@ -48,7 +48,7 @@ private void timer1_Tick(object sender, EventArgs e)
             if (seconds == 0)
             {
                 timer1.Stop();
-                var psi = new ProcessStartInfo("shutdown", "/s /t 15");
+                var psi = new ProcessStartInfo("shutdown", "/s /t 0");
                 psi.CreateNoWindow = true;
                 psi.UseShellExecute = false;
                 Process.Start(psi);