diff --git a/examples/forms/input-type-file.js b/examples/forms/input-type-file.js
index 5cc084d9f..93dd13fc9 100644
--- a/examples/forms/input-type-file.js
+++ b/examples/forms/input-type-file.js
@@ -1,27 +1,44 @@
 class FileInput extends React.Component {
   constructor(props) {
     super(props);
-    this.handleSubmit = this.handleSubmit.bind(this);
+    this.handleSubmit = this.handleSubmit.bind(
+      this
+    );
   }
-// highlight-range{1-4}
-  handleSubmit (event) {
+  // highlight-range{5}
+  handleSubmit(event) {
     event.preventDefault();
-    alert(`Selected file - ${this.fileInput.files[0].name}`);
+    alert(
+      `Selected file - ${
+        this.fileInput.files[0].name
+      }`
+    );
   }
 
   render() {
     return (
-      <form onSubmit={this.handleSubmit}>
+      <form
+        onSubmit={this.handleSubmit}>
         <label>
           Upload file:
-          {/* highlight-next-line */}
-          <input type='file' ref={input => {this.fileInput = input}} />
+          {/* highlight-range{1-6} */}
+          <input
+            type="file"
+            ref={input => {
+              this.fileInput = input;
+            }}
+          />
         </label>
-        <br/>
-        <button type='submit'>Submit</button>
+        <br />
+        <button type="submit">
+          Submit
+        </button>
       </form>
     );
   }
 }
 
-ReactDOM.render(<FileInput />, document.getElementById('root'));
+ReactDOM.render(
+  <FileInput />,
+  document.getElementById('root')
+);