diff --git a/module/productplan/js/edit.js b/module/productplan/js/edit.js
index 9d3733f176..4d4a4db832 100644
--- a/module/productplan/js/edit.js
+++ b/module/productplan/js/edit.js
@@ -88,7 +88,7 @@ $('#submit').click(function()
 {
     var parentPlan = $('#parent').val();
     var branches   = $('#branch').val();
-    if(parentPlan != 0 && branches)
+    if(parentPlan > 0 && branches)
     {
         link = createLink('productplan', 'ajaxGetDiffBranchesTip', "produtID=" + productID + "&parentID=" + parentPlan + "&branches=" + branches.toString());
         $.post(link, function(diffBranchesTip)