diff --git a/README.md b/README.md
index e08b69a2ed48bb0a778373b3e5abc0d97972a860..dc2feaf78dcf23ea762640f454907f557dc450a1 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ There are 3 steps in this tutorial.
 ## Step 0. Before we start! You have to prepare...
 
 In this part, I'll show a example code of self-rotating 3d cube and a example output of it.\
-[https://git.ajou.ac.kr/Jiyoung_Moon/mouse-drag-for-transform-camera/-/blob/master/self-rotating-cube.gif](url)\
+[](https://git.ajou.ac.kr/Jiyoung_Moon/mouse-drag-for-transform-camera/-/blob/master/self-rotating-cube.gif)\
 This code is used for the next steps.
 
 ## Step 1. Remove some codes.