diff --git a/o2web/source/o2_core/o2.js b/o2web/source/o2_core/o2.js
index e0f63e14d3dc72b2ef58cd42f7faf3861b540409..28059587d7fdb557388b84ac67a2f56f27849806 100644
--- a/o2web/source/o2_core/o2.js
+++ b/o2web/source/o2_core/o2.js
@@ -1862,7 +1862,7 @@ if (!window.Promise){
 
     var _promiseAll = function(p){
         if (o2.typeOf(p)=="array"){
-            if (p.some(function(e){ return (o2.typeOf(e.then)=="function") })){
+            if (p.some(function(e){ return (e && o2.typeOf(e.then)=="function") })){
                 return Promise.all(p);
             }else{
                 return { "then": function(s){ s(p); return this;} };