diff --git a/README.md b/README.md
index 485a47a..af8c160 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,8 @@ CVE-2023-33381: OS command injection on MitraStar GPT-2741GNAC
 
 ![image](https://github.com/duality084/CVE-2023-33381-MitraStar-GPT-2741GNAC/assets/7117259/8ee5c6ba-b4c6-4a3f-829a-ebeb5945f18b)
 
+### Root of cause
+
 ![image](https://github.com/duality084/CVE-2023-33381-MitraStar-GPT-2741GNAC/assets/7117259/4c9bd5c9-c71b-4d04-b0b1-718195067902)
 
 ![image](https://github.com/duality084/CVE-2023-33381-MitraStar-GPT-2741GNAC/assets/7117259/1ce7c0ff-8964-4934-a5a2-1cf96990c20b)