diff --git a/rhodecode/public/js/src/rhodecode/comments.js b/rhodecode/public/js/src/rhodecode/comments.js
index 3e9cf02f..2cb68386 100644
--- a/rhodecode/public/js/src/rhodecode/comments.js
+++ b/rhodecode/public/js/src/rhodecode/comments.js
@@ -484,14 +484,14 @@ var _submitAjaxPOST = function(url, postData, successHandler, failHandler) {
         $(this.previewButton).on('click', function(e) {
             e.preventDefault();
 
-            self.showUploadSection(false);
-
             var text = self.cm.getValue();
 
             if (text === "") {
                 return;
             }
 
+            self.showUploadSection(false);
+
             var postData = {
                 'text': text,
                 'renderer': templateContext.visual.default_renderer,