diff --git a/js/core.js b/js/core.js
index ce9bd40..5f2cced 100644
--- a/js/core.js
+++ b/js/core.js
@@ -67,8 +67,8 @@ function Canvas(width, height, upscale) {
     this.elem.addEventListener('touchend', function (e) {
         that.clicked = false;
 
-        that.firstX = e.touches[0].pageY;
-        that.firstY = e.touches[0].pageY;
+        that.firstX = this.pageX;
+        that.firstY = this.pageY;
     });