diff --git a/README.md b/README.md
index 2af0dafaf..80a0a5427 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ SkyWalking: Large-Scale Distributed Systems Tracing Infrastructure, also known D
 # Supported components
 * web container
 
-[![Tomcat 7 Test Docker](https://img.shields.io/badge/test--scenario-tomcat--7.0.73-brightgreen.svg)](https://hub.docker.com/r/skywalking/docker-tomcat-scenario/tags/)
+  [![Tomcat 7 Test Docker](https://img.shields.io/badge/test--scenario-tomcat--7.0.73-brightgreen.svg)](https://hub.docker.com/r/skywalking/docker-tomcat-scenario/tags/)
 [![Tomcat 8 Test Docker](https://img.shields.io/badge/test--scenario-tomcat--8.0.39-brightgreen.svg)](https://hub.docker.com/r/skywalking/docker-tomcat-scenario/tags/)
 
 * database