diff --git a/how-to-choose-a-binary-for-your-device.md b/how-to-choose-a-binary-for-your-device.md
index ffbad2d..2d945ec 100644
--- a/how-to-choose-a-binary-for-your-device.md
+++ b/how-to-choose-a-binary-for-your-device.md
@@ -21,7 +21,7 @@ Make sure you have installed a virtual machine software(such as VMware or Virtua
 
 Download and import `lede-17.01.2-x86_virtual_machine_image_with_udp2raw_pre_installed.zip`,Its less than 10MB.
 
-Use the udp2raw inside virtual machine.
+Use the udp2raw inside virtual machine(make sure the virtual machine runs at bridged mode).
 
 ### Other Linux-based Device
 You have to build by yourself. Check: