diff --git a/source/js/DataSource.js b/source/js/DataSource.js
index 0d30d08..34026ae 100644
--- a/source/js/DataSource.js
+++ b/source/js/DataSource.js
@@ -222,9 +222,11 @@ DataSource.prototype.getCurrentData = function (callback) {
 
             })(data));
         } else if (mdxType === "mdx") {
-            if (!data || !data.Data || !data.Cols
-            || (!data.Data.length && !((data.Cols[0]||{}).tuples||[]).length)
-            && !((data.Cols[1]||{}).tuples||[]).length) {
+            if (
+                !data || !data.Data || !data.Data.length || !data.Cols
+                || (!data.Data.length && !((data.Cols[0]||{}).tuples||[]).length)
+                && !((data.Cols[1]||{}).tuples||[]).length
+            ) {
                 return callback({
                     error: pivotLocale.get(4)
                 });