diff --git a/tutorials/instagram-style-double-tap/src/DoubleTap.js b/tutorials/instagram-style-double-tap/src/DoubleTap.js
index 03dc166..b059362 100644
--- a/tutorials/instagram-style-double-tap/src/DoubleTap.js
+++ b/tutorials/instagram-style-double-tap/src/DoubleTap.js
@@ -12,7 +12,7 @@ export default class DoubleTap extends React.Component {
   // https://gist.github.com/brunotavares/3c9a373ba5cd1b4ff28b
   handleDoubleTap = () => {
     const now = Date.now();
-    if (this.lastTap && (now - this.lastTap) < this.props.delay) {
+    if (lastTap && now - lastTap < (this.props.delay || defaultProps.delay)) {
       this.props.onDoubleTap();
     } else {
       this.lastTap = now;