diff --git a/README.md b/README.md
index 9778253..8a57d64 100644
--- a/README.md
+++ b/README.md
@@ -269,7 +269,7 @@ For Ubuntu, official recommend mirror lists are here:
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 **-lang or -language "cn / en / jp"**:
-This option is to set language of dd images of Windows like: -windows 10 -lang "en", cn is simplified Chinese, en is English, jp is Japanese, default is cn.
+This option is to set language of dd images of Windows like: -windows 10 -lang "en", cn is simplified Chinese, en is English, jp is Japanese, default is cn. It's not valid for Linux distributions.
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