diff --git a/docs/html/_sources/upgrade.txt b/docs/html/_sources/upgrade.txt
index 158e3a1fb..3a5c6ea16 100644
--- a/docs/html/_sources/upgrade.txt
+++ b/docs/html/_sources/upgrade.txt
@@ -124,7 +124,7 @@ combination.  For example,
 
     <script type="text/x-mathjax-config">
       MathJax.Hub.Config({
-        TeX: {
+        tex2jax: {
           inlineMath: [ ['$','$'], ['\\(','\\)'] ],
           processEscapes: true
         }
diff --git a/docs/html/upgrade.html b/docs/html/upgrade.html
index ee59577c1..c64c02830 100644
--- a/docs/html/upgrade.html
+++ b/docs/html/upgrade.html
@@ -147,7 +147,7 @@ of the configuration parameters, you can use both a
 combination.  For example,</p>
 <div class="highlight-html"><div class="highlight"><pre><span class="nt">&lt;script </span><span class="na">type=</span><span class="s">&quot;text/x-mathjax-config&quot;</span><span class="nt">&gt;</span>
   <span class="nx">MathJax</span><span class="p">.</span><span class="nx">Hub</span><span class="p">.</span><span class="nx">Config</span><span class="p">({</span>
-    <span class="nx">TeX</span><span class="o">:</span> <span class="p">{</span>
+    <span class="nx">tex2jax</span><span class="o">:</span> <span class="p">{</span>
       <span class="nx">inlineMath</span><span class="o">:</span> <span class="p">[</span> <span class="p">[</span><span class="s1">&#39;$&#39;</span><span class="p">,</span><span class="s1">&#39;$&#39;</span><span class="p">],</span> <span class="p">[</span><span class="s1">&#39;\\(&#39;</span><span class="p">,</span><span class="s1">&#39;\\)&#39;</span><span class="p">]</span> <span class="p">],</span>
       <span class="nx">processEscapes</span><span class="o">:</span> <span class="kc">true</span>
     <span class="p">}</span>
diff --git a/docs/source/upgrade.rst b/docs/source/upgrade.rst
index 158e3a1fb..3a5c6ea16 100644
--- a/docs/source/upgrade.rst
+++ b/docs/source/upgrade.rst
@@ -124,7 +124,7 @@ combination.  For example,
 
     <script type="text/x-mathjax-config">
       MathJax.Hub.Config({
-        TeX: {
+        tex2jax: {
           inlineMath: [ ['$','$'], ['\\(','\\)'] ],
           processEscapes: true
         }