diff --git a/v1/lib/core/toc.js b/v1/lib/core/toc.js
index 691d202b09fa..9ee9a704575a 100644
--- a/v1/lib/core/toc.js
+++ b/v1/lib/core/toc.js
@@ -9,7 +9,7 @@ const Remarkable = require('remarkable');
 const mdToc = require('markdown-toc');
 const toSlug = require('./toSlug');
 
-const TABLE_OF_CONTENTS_TOKEN = '<AUTOGENERATED_TABLE_OF_CONTENTS>';
+const tocRegex = new RegExp('<AUTOGENERATED_TABLE_OF_CONTENTS>', 'i');
 
 /**
  * Returns a table of content from the headings
@@ -58,7 +58,7 @@ function getTOC(content, headingTags = 'h2', subHeadingTags = 'h3') {
 // takes the content of a doc article and returns the content with a table of
 // contents inserted
 function insertTOC(rawContent) {
-  if (!rawContent || rawContent.indexOf(TABLE_OF_CONTENTS_TOKEN) === -1) {
+  if (!rawContent || !tocRegex.test(rawContent)) {
     return rawContent;
   }
   const filterRe = /^`[^`]*`/;
@@ -67,7 +67,7 @@ function insertTOC(rawContent) {
     .filter(header => filterRe.test(header.rawContent))
     .map(header => `  - [${header.rawContent}](#${header.hashLink})`)
     .join('\n');
-  return rawContent.replace(TABLE_OF_CONTENTS_TOKEN, tableOfContents);
+  return rawContent.replace(tocRegex, tableOfContents);
 }
 
 module.exports = {