diff --git a/src/card/card.jsx b/src/card/card.jsx
index 1fcd022dbeb3ed..56b2835745bc18 100644
--- a/src/card/card.jsx
+++ b/src/card/card.jsx
@@ -22,7 +22,8 @@ const Card = React.createClass({
     style: React.PropTypes.object,
   },
 
-  _onExpandable() {
+  _onExpandable(e) {
+    e.preventDefault();
     let newExpandedState = !(this.state.expanded === true);
     this.setState({expanded: newExpandedState});
     if (this.props.onExpandChange)