diff --git a/unpacked/MathJax.js b/unpacked/MathJax.js
index 34ccd5101..13be007cf 100644
--- a/unpacked/MathJax.js
+++ b/unpacked/MathJax.js
@@ -27,9 +27,12 @@
  *  limitations under the License.
  */
 
+if (window.MathJax) {window.MathJax = {AuthorConfig: window.MathJax}} else {window.MathJax = {}}
+
+// MathJax.isPacked = true; // This line is uncommented by the packer.
+
 if (document.getElementById && document.childNodes && document.createElement) {
 
-if (window.MathJax) {window.MathJax = {AuthorConfig: window.MathJax}} else {window.MathJax = {}}
 if (!MathJax.Hub) {  // skip if already loaded
   
 MathJax.version = "2.3-beta";