diff --git a/mainwindow.cpp b/mainwindow.cpp
index 22830bb..e8a9c1e 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -309,8 +309,10 @@ void MainWindow::on_pushButton_10_clicked() {
 	switch (ui->comboBox->currentIndex()) {
     case 0:
         {
-            revDatatmp = dacHandler->getDACReg(drvUart,tmp);
-            onLogPrint(" [UART] <-- Read Reg data is :"+revDatatmp.toHex(' '));
+            QByteArray ba = dacHandler->getDACReg(drvUart,tmp);
+            revDatatmp = ba;
+            revDatatmp.detach();
+            onLogPrint(" [UART] <-- Read Reg data is :"+ ba.toHex(' '));
             break;
         }