diff --git a/AIParkingApplication/Statistic.cs b/AIParkingApplication/Statistic.cs
index a9189f7..b2b1c06 100644
--- a/AIParkingApplication/Statistic.cs
+++ b/AIParkingApplication/Statistic.cs
@@ -44,19 +44,19 @@ namespace AIParkingApplication
                 HttpResponseMessage response = await client.GetAsync("/api/statistics");
                 response.EnsureSuccessStatusCode();
                 var vehicle = await response.Content.ReadAsAsync<Vehicle>();
-                lblSoLuongXeMay?.Invoke(new Action(() =>
+                lblSoLuongXeMay.Invoke(new Action(() =>
                 {
                     lblSoLuongXeMay.Text = vehicle.NumberOfMoto.ToString();
                 }));
-                lblSoLuongOto?.Invoke(new Action(() =>
+                lblSoLuongOto.Invoke(new Action(() =>
                 {
                     lblSoLuongOto.Text = vehicle.NumberOfCar.ToString();
                 }));
-                lblVehicleTotalIn?.Invoke(new Action(() =>
+                lblVehicleTotalIn.Invoke(new Action(() =>
                 {
                     lblVehicleTotalIn.Text = vehicle.TotalIn;
                 }));
-                lblVehicleTotalOut?.Invoke(new Action(() =>
+                lblVehicleTotalOut.Invoke(new Action(() =>
                 {
                     lblVehicleTotalOut.Text = vehicle.TotelOut;
                 }));