diff --git a/controller/controller.js b/controller/controller.js
index fb1839d..bb771fa 100644
--- a/controller/controller.js
+++ b/controller/controller.js
@@ -15,7 +15,7 @@ document.onmouseup = function(e) {
 };
 document.ontouchend = function(e) {
     document.getElementById("slingshot").classList.add("ungrabbed");
-    sendNudge(-Math.floor(e.touches[0].clientX - window.innerWidth / 2), Math.floor(e.touches[0].clientY - (window.innerHeight / 2)));
+    sendNudge(-Math.floor(e.changedTouches[0].clientX - window.innerWidth / 2), Math.floor(e.changedTouches[0].clientY - (window.innerHeight / 2)));
 };
 document.ontouchstart = function(e) {
     e.preventDefault();