diff --git a/README.md b/README.md
index 1d0c3cd..04eb73f 100644
--- a/README.md
+++ b/README.md
@@ -175,7 +175,7 @@ If your docker registry need credentials, you will need to send these HEADERS:
 http:
   headers:
     Access-Control-Allow-Origin: ['<your docker-registry-ui url>']
-    Access-Control-Allow-Credentials: true
+    Access-Control-Allow-Credentials: [true]
     Access-Control-Allow-Methods: ['HEAD', 'GET', 'OPTIONS'] # Optional
 ```
 
@@ -239,4 +239,4 @@ auth:
 - [FIX revproxy to registry does not work when published under non-root url](https://github.com/Joxit/docker-registry-ui/tree/master/examples/issue-73) ([#73](https://github.com/Joxit/docker-registry-ui/issues/73))
 - [Use docker-registry-ui with HTTPS](https://github.com/Joxit/docker-registry-ui/tree/master/examples/issue-20) ([#20](https://github.com/Joxit/docker-registry-ui/issues/20))
 - [Unable to push image when docker-registry-ui is used as a proxy on non 80 port](https://github.com/Joxit/docker-registry-ui/tree/master/examples/issue-88) ([#88](https://github.com/Joxit/docker-registry-ui/issues/88))
-- [Add custom headers bases on environment variable and/or file when the ui is used as proxy](https://github.com/Joxit/docker-registry-ui/tree/master/examples/proxy-headers) ([#89](https://github.com/Joxit/docker-registry-ui/pull/89))
\ No newline at end of file
+- [Add custom headers bases on environment variable and/or file when the ui is used as proxy](https://github.com/Joxit/docker-registry-ui/tree/master/examples/proxy-headers) ([#89](https://github.com/Joxit/docker-registry-ui/pull/89))