diff --git a/How-to-use-the-4G-extension.md b/How-to-use-the-4G-extension.md
index 96ff98a..e4d8947 100644
--- a/How-to-use-the-4G-extension.md
+++ b/How-to-use-the-4G-extension.md
@@ -41,6 +41,7 @@ and if unpack your back shell , you will see a green LED light is flashing on 4G
 run `enable_4g.sh` or `uconsole-4g enable` depends on the version of your os image, both can do the same job
 
 Please wait for it to complete, which may take about 20 seconds. Please be patient and try not press ctrl+c.  
+
 next is **VERY IMPORTANT**, to check the version of your 4G extension by AT commands:
 
 ```