diff --git a/README.md b/README.md
index bdb0adf5..e8b3cbcd 100644
--- a/README.md
+++ b/README.md
@@ -53,4 +53,4 @@ For all `release` information, please visit this [link](https://github.com/ambio
     </br>
 
 ## 3. Contributing to Ameba
-Please spend 5mins to read the **Coding Style** and **Contribution Guideline** at [here](https://github.com/ambiot/ambd_arduino/wiki/Contributing-to-Ameba) before you contribute.
+Please spend 5 mins to read the **Coding Style** and **Contribution Guideline** at [here](https://github.com/ambiot/ambd_arduino/wiki/Contributing-to-Ameba) before you contribute.