diff --git a/docs/10.4-test-utils.md b/docs/10.4-test-utils.md
index 001f9144..f768b69a 100644
--- a/docs/10.4-test-utils.md
+++ b/docs/10.4-test-utils.md
@@ -21,7 +21,7 @@ Example usage:
 ```javascript
 var node = this.refs.input.getDOMNode();
 React.addons.TestUtils.Simulate.click(node);
-React.addons.TestUtils.Simulate.change(node);
+React.addons.TestUtils.Simulate.change(node, {target: {value: 'Hello, world'}});
 React.addons.TestUtils.Simulate.keyDown(node, {key: "Enter"});
 ```