diff --git a/QueueSys/frmCustomerView.cs b/QueueSys/frmCustomerView.cs
index f00fe8b..ea55fb6 100644
--- a/QueueSys/frmCustomerView.cs
+++ b/QueueSys/frmCustomerView.cs
@@ -43,5 +43,10 @@ namespace QueueSys
         {
             RefreshCustomerView();
         }
+
+        private void frmCustomerView_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            e.Cancel = true;
+        }
     }
 }