diff --git a/AIParkingApplication/AIParkingApplicationForm.cs b/AIParkingApplication/AIParkingApplicationForm.cs
index 956191c..a924504 100644
--- a/AIParkingApplication/AIParkingApplicationForm.cs
+++ b/AIParkingApplication/AIParkingApplicationForm.cs
@@ -209,14 +209,22 @@ namespace AIParkingApplication
             }
         }
 
-        private void AIParkingApplicationForm_FormClosing(object sender, FormClosingEventArgs e)
-        {
-            Application.Exit();
-        }
-
         private void AIParkingApplicationForm_Load(object sender, EventArgs e)
         {
             InitAllLanes();
         }
+
+        private void AIParkingApplicationForm_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            DialogResult closeAppDialog = MessageBox.Show("Bạn chắc chắn thoát phần mềm quản lý bãi xe?", "Cảnh báo đóng ứng dụng: AIParking - Hệ thống quản lý bãi đỗ xe", MessageBoxButtons.OKCancel, MessageBoxIcon.Error);
+            if (closeAppDialog == DialogResult.OK)
+            {
+                Environment.Exit(0);
+            }
+            else
+            {
+                e.Cancel = true;
+            }
+        }
     }
 }