diff --git a/AIParkingApplication/Statistic.cs b/AIParkingApplication/Statistic.cs
index fcd7289..14a6c6e 100644
--- a/AIParkingApplication/Statistic.cs
+++ b/AIParkingApplication/Statistic.cs
@@ -9,6 +9,7 @@ namespace AIParkingApplication
     public partial class Statistic : UserControl
     {
         private readonly HttpClient client;
+        private readonly Thread thrStatistics;
 
         Label lblLoaiXe;
         Label lblXeMay;
@@ -20,8 +21,8 @@ namespace AIParkingApplication
         public Statistic(string apiUrl)
         {
             InitializeComponent();
-            Thread thrStatistics = new Thread(new ThreadStart(GetStatistic));
             client = new HttpClient { BaseAddress = new Uri(apiUrl), Timeout = TimeSpan.FromMilliseconds(5000) };
+            thrStatistics = new Thread(new ThreadStart(GetStatistic));
             thrStatistics.IsBackground = true;
             thrStatistics.Start();
         }