diff --git a/www/js/platform.js b/www/js/platform.js
index 45c8216cfc366d244bceee46a818898f333cd003..09c6cd1abe547d1fd29098c607faeda04538e7c0 100644
--- a/www/js/platform.js
+++ b/www/js/platform.js
@@ -439,7 +439,7 @@ if (typeof String.prototype.trim !== 'function') {
 if (Math && typeof Math.trunc !== 'function') {
   console.debug("Adding Math.trunc() -> was missing on this platform");
   Math.trunc = function(number) {
-    return (number - 0.5).toFixed();
+    return parseInt((number - 0.5).toFixed());
   };
 }