diff --git a/docs/index.md b/docs/index.md
index 227cc601..595a2c4a 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -21,7 +21,7 @@
 
 [![minicore_m5stick.png](http://m5-docs.oss-cn-shenzhen.aliyuncs.com/assets/img/product_pics/homepage_picture/core/core_m5stick_01.png)](en/core/m5stick)
 
-          **M5Stick**
+          *M5Stick*
 
  
 
@@ -49,7 +49,7 @@
 
 [![module_commu.jpg](http://m5-docs.oss-cn-shenzhen.aliyuncs.com/assets/img/product_pics/homepage_picture/module/module_commu_01.png)](en/module/commu)         
 
-          **COMMU**
+          *COMMU*