diff --git a/app/fwupgrade/mainwindow.cpp b/app/fwupgrade/mainwindow.cpp
index e2b92ec4..3166d137 100644
--- a/app/fwupgrade/mainwindow.cpp
+++ b/app/fwupgrade/mainwindow.cpp
@@ -283,7 +283,7 @@ void MainWindow::on_comboDevList_currentIndexChanged(int index)
 
             SANE_Int rollCount = 0;
             unsigned int rollCountSize = sizeof(SANE_Int);
-            SANE_Status ret = sane_io_control(m_curDevHandle, IO_CTRL_CODE_GET_HISTORY_ROLLER_NUM, &rollCount, &rollCountSize);
+            SANE_Status ret = sane_io_control(m_curDevHandle, IO_CTRL_CODE_GET_ROLLER_NUM, &rollCount, &rollCountSize);
             if(ret == SANE_STATUS_GOOD && rollCount >= 0)
             {
                 ui->labelRollCount->setText(QString("%1").arg(rollCount));
@@ -295,7 +295,7 @@ void MainWindow::on_comboDevList_currentIndexChanged(int index)
 
             SANE_Int scanCount = 0;
             unsigned int scanCountSize = sizeof(SANE_Int);
-            ret = sane_io_control(m_curDevHandle, IO_CTRL_CODE_GET_SCANN_NUM, &scanCount, &scanCountSize);
+            ret = sane_io_control(m_curDevHandle, IO_CTRL_CODE_GET_HISTORY_SCAN_NUM, &scanCount, &scanCountSize);
             if (ret == SANE_STATUS_GOOD && scanCount >= 0)
             {
                 ui->labelScanCount->setText(QString("%1").arg(scanCount));