diff --git a/README.md b/README.md
index cc07abc3..96a24d61 100644
--- a/README.md
+++ b/README.md
@@ -592,7 +592,7 @@ This method is designed to get the hierarchy relationships of orgchart for furth
 ### Tips
 - **How can I deactivate expand/collapse feature of orgchart?**
 
-This use case is inspired by the [issue](https://github.com/dabeng/OrgChart/issues/25). Thank @der-robert and @ActiveScottShaw for their constructive discussions:blush)
+This use case is inspired by the [issue](https://github.com/dabeng/OrgChart/issues/25). Thank [der-robert](https://github.com/der-robert) and [ActiveScottShaw](https://github.com/ActiveScottShaw) for their constructive discussions:blush:
 
 Users can enable/disable exapand/collapse feature with className "noncollapsable" as shown below.
 ```js