diff --git a/www/js/interface.js b/www/js/interface.js
index ba14792..f56a8c5 100644
--- a/www/js/interface.js
+++ b/www/js/interface.js
@@ -390,7 +390,7 @@ const INTERFACE = {
 
     release_touch(event) {
         let rect = event.target.getBoundingClientRect();
-        let touch = event.tocuhes[0] || event.changedTouches[0];
+        let touch = event.touches[0] || event.changedTouches[0];
         let x = touch.clientX - rect.left;
         let y = touch.clientY - rect.top;