diff --git a/lib/client/listeners.js b/lib/client/listeners.js
index de9fec16..e870ebe2 100644
--- a/lib/client/listeners.js
+++ b/lib/client/listeners.js
@@ -129,16 +129,18 @@ var Util, DOM, CloudCmd;
              */
                 lOnDragStart_f = function(pEvent) {
                     var lElement    = pEvent.target,
+                        EXT         = 'json',
+                        isDir       = DOM.isCurrentIsDir(),
                         lLink       = lElement.href,
                         lName       = lElement.textContent;
                     
                     /* if it's directory - adding json extension */
-                    if( DOM.isCurrentIsDir() ){
-                        lName       += '.json';
-                        lLink       += '?json';
+                    if (isDir) {
+                        lName       += '.' + EXT;
+                        lLink       += '?' + EXT;
                     }
                     
-                    pEvent.dataTransfer.setData("DownloadURL",
+                    pEvent.dataTransfer.setData('DownloadURL',
                         'application/octet-stream'  + ':' +
                         lName                       + ':' + 
                         lLink);