diff --git a/README.en-us.md b/README.en-us.md
index 97d16a6..793d021 100644
--- a/README.en-us.md
+++ b/README.en-us.md
@@ -17,6 +17,7 @@
   </a>
 </p>
 
+> A replacement of Gravitee.
 > **Business or technical inquiries**:  
 Please [purchase directly](https://l.fizzgate.com/#/shop/purchase) or [contact us](https://www.fizzgate.com/fizz/cms/article/about/contact/).