diff --git a/o2web/source/o2_core/o2/widget/ImageViewer.js b/o2web/source/o2_core/o2/widget/ImageViewer.js
index a272d6c29a4895db4bdabba3ace0be3a8ab7c758..077a88ca8bec4090de6b7e02b4279a320e90bd7e 100644
--- a/o2web/source/o2_core/o2/widget/ImageViewer.js
+++ b/o2web/source/o2_core/o2/widget/ImageViewer.js
@@ -32,8 +32,8 @@ o2.widget.ImageViewer = o2.ImageViewer = new Class({
             var flag = false;
             this.nodeList.each(function(node){
                 if(node)node.getElements("img").each(function(img){
-                    var preview = img.get("data-prv");
-                    if( preview !== "false" && preview !== false ){
+                    var enablePreview = img.get("data-prv");
+                    if( enablePreview !== "false" && enablePreview !== false ){
                         flag = true;
                         img.setStyle("cursor", "pointer");
                         img.set("preview", "true");