diff --git a/lib/web/mage/adminhtml/wysiwyg/tiny_mce/setup.js b/lib/web/mage/adminhtml/wysiwyg/tiny_mce/setup.js
index 2c4ab52b896cb..306c9557e6456 100755
--- a/lib/web/mage/adminhtml/wysiwyg/tiny_mce/setup.js
+++ b/lib/web/mage/adminhtml/wysiwyg/tiny_mce/setup.js
@@ -329,8 +329,9 @@ define([
 
         encodeDirectives: function(content) {
             // collect all HTML tags with attributes that contain directives
-            return content.gsub(/<([a-z0-9\-\_]+.+?)([a-z0-9\-\_]+=".*?\{\{.+?\}\}.*?".+?)>/i, function(match) {
+            return content.gsub(/\<([a-z0-9\-\_]+.+?)([a-z0-9\-\_]+=".*?\{\{.+?\}\}.*?".*?)>/i, function(match) {
                 var attributesString = match[2];
+
                 // process tag attributes string
                 attributesString = attributesString.gsub(/([a-z0-9\-\_]+)="(.*?)(\{\{.+?\}\})(.*?)"/i, function(m) {
                     return m[1] + '="' + m[2] + this.makeDirectiveUrl(Base64.mageEncode(m[3])) + m[4] + '"';