diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-## ROBOTIS OP3
+# ROBOTIS OP3
 <img src="https://github.com/ROBOTIS-GIT/emanual/blob/master/assets/images/platform/op3/default_op3.jpg" width="40%" />  
 
 ## ROS Packages for ROBOTIS OP3 Demo