diff --git a/lib/react-ui-tree.js b/lib/react-ui-tree.js
index d8527524..9c197ec4 100644
--- a/lib/react-ui-tree.js
+++ b/lib/react-ui-tree.js
@@ -8,7 +8,8 @@ module.exports = React.createClass({
   propTypes: {
     tree: React.PropTypes.object.isRequired,
     paddingLeft: React.PropTypes.number,
-    renderNode: React.PropTypes.func.isRequired
+    renderNode: React.PropTypes.func.isRequired,
+    handleClassName: React.PropTypes.string
   },
 
   getDefaultProps() {
@@ -93,6 +94,10 @@ module.exports = React.createClass({
   },
 
   dragStart(id, dom, e) {
+    if (typeof this.props.handleClassName !== 'undefined'
+        && !e.target.classList.contains(this.props.handleClassName)) {
+      return;
+    }
     this.dragging = {
       id: id,
       w: dom.offsetWidth,