diff --git a/layout/_widget/mathjax.ejs b/layout/_widget/mathjax.ejs
index 2abf93b2e..4514656a2 100644
--- a/layout/_widget/mathjax.ejs
+++ b/layout/_widget/mathjax.ejs
@@ -14,7 +14,7 @@
     });
 </script>
 <% if(theme.materialcdn.use === true) { %>
-    <script src="<%= theme.materialcdn.base %>/js/mathjax.js"></script>
+    <script src="<%= theme.materialcdn.base %>/js/mathjax.js?config=TeX-AMS-MML_HTMLorMML"></script>
 <%}else{%>
-    <script type="text/javascript" src="/js/mathjax.js"></script>
+    <script type="text/javascript" src="/js/mathjax.js?config=TeX-AMS-MML_HTMLorMML"></script>
 <%}%>