diff --git a/app/gui/oven_control/configbacklightdlg.cpp b/app/gui/oven_control/configbacklightdlg.cpp
index 8e88d92..4a2114b 100644
--- a/app/gui/oven_control/configbacklightdlg.cpp
+++ b/app/gui/oven_control/configbacklightdlg.cpp
@@ -2,6 +2,8 @@
 #include "ui_configbacklightdlg.h"
 #include "config.h"
 
+#include "backlight.h"
+
 using namespace Define;
 
 #define MAX_LIGHT 7
@@ -41,6 +43,10 @@ void ConfigBackLightDlg::on_ctrBtnOk_clicked()
 
 void ConfigBackLightDlg::on_ctrBtnCancel_clicked()
 {
+    Config* cfg = Config::getInstance();
+    config_item item;
+    item = cfg->getConfigValue(config_backlight);
+    Backlight::set(item.d32);
     reject();
 }
 
@@ -54,6 +60,8 @@ void ConfigBackLightDlg::on_ctrBtnPlus_clicked()
     //minus button;
     m_nSelBackLight = m_nSelBackLight>0?m_nSelBackLight-1:0;
     ui->ctrProgressLight->setCurrentProgress(m_nSelBackLight);
+
+    Backlight::set(m_nSelBackLight);
 }
 
 
@@ -62,4 +70,6 @@ void ConfigBackLightDlg::on_ctrBtnMinus_clicked()
 {
     m_nSelBackLight = m_nSelBackLight<7?m_nSelBackLight+1:7;
     ui->ctrProgressLight->setCurrentProgress(m_nSelBackLight);
+
+    Backlight::set(m_nSelBackLight);
 }