diff --git a/How-to-Unlock-MCU-Flash.md b/How-to-Unlock-MCU-Flash.md
index 4ab1b03..556dc3a 100644
--- a/How-to-Unlock-MCU-Flash.md
+++ b/How-to-Unlock-MCU-Flash.md
@@ -32,7 +32,7 @@ If you get funny, unexpected behavior from your board after flashing (see this [
 * Step 3: Click `OK` if you get any error/warning.
 * Step 4: Flash the firmware
 
-You can also try to check WDG_SW option.
+You can also try to check WDG_SW in option bytes.
 
 # Method 2: Using Ubuntu/Linux