diff --git a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/EliteCVCurve.h b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/EliteCVCurve.h
index eb1ef2841..cee78c809 100644
--- a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/EliteCVCurve.h
+++ b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/EliteCVCurve.h
@@ -322,6 +322,7 @@ static void CV_Plot(CVMode *CV){
     NotifyCurrent[3] = (uint8_t) (CV->_MeasureData & 0x000000FF);
 
     if (CV->_VoVi_Switch == 0x01){        //user see Vin
+        LED_color(DARKLED, 255, 0, 0);
         NotifyVolt[0] = (uint8_t) (CV->MeasureVolt >> 24);
         NotifyVolt[1] = (uint8_t) ((CV->MeasureVolt & 0x00FF0000) >> 16);
         NotifyVolt[2] = (uint8_t) ((CV->MeasureVolt & 0x0000FF00) >> 8);