diff --git a/docs/tips/18-use-react-with-other-libraries.ko-KR.md b/docs/tips/18-use-react-with-other-libraries.ko-KR.md
index d0ec83e9d5..9dfd1d46c5 100644
--- a/docs/tips/18-use-react-with-other-libraries.ko-KR.md
+++ b/docs/tips/18-use-react-with-other-libraries.ko-KR.md
@@ -16,7 +16,7 @@ var App = React.createClass({
   },
 
   componentDidMount: function() {
-    $(ReactDOM.findDOMNode(this.refs.placeholder)).append($('<span />'));
+    $(this.refs.placeholder).append($('<span />'));
   },
 
   componentWillUnmount: function() {
diff --git a/docs/tips/18-use-react-with-other-libraries.md b/docs/tips/18-use-react-with-other-libraries.md
index f7bb2cb32a..fc5634fa8e 100644
--- a/docs/tips/18-use-react-with-other-libraries.md
+++ b/docs/tips/18-use-react-with-other-libraries.md
@@ -16,7 +16,7 @@ var App = React.createClass({
   },
 
   componentDidMount: function() {
-    $(ReactDOM.findDOMNode(this.refs.placeholder)).append($('<span />'));
+    $(this.refs.placeholder).append($('<span />'));
   },
 
   componentWillUnmount: function() {