diff --git a/README.md b/README.md
index cdd9276..a8a9ddc 100644
--- a/README.md
+++ b/README.md
@@ -84,8 +84,9 @@ You can launch the z1 Gazebo simulation with the following command:
 roslaunch unitree_gazebo z1.launch
 ```
 
-After launching the gazebo simulation, you can start to control the z1 robot by z1_sdk. see [z1_documentation](dev-z1.unitree.com/5-sdk/run.html)  
-You can also send ros commands derectly to z1 robot:
+After launching the gazebo simulation, you can start to control the z1 robot by z1_sdk.  
+see [z1_documentation](dev-z1.unitree.com/5-sdk/run.html)  
+You can also send ros commands directly to z1 robot:
 ```
 rosrun z1_controller unitree_move_z1
 ```