diff --git a/commons/src/title-extraction/extract-first-heading.spec.ts b/commons/src/title-extraction/extract-first-heading.spec.ts
index 74348221f..438f04316 100644
--- a/commons/src/title-extraction/extract-first-heading.spec.ts
+++ b/commons/src/title-extraction/extract-first-heading.spec.ts
@@ -46,6 +46,17 @@ describe('extract first heading', () => {
       expect(extractFirstHeading(document)).toBe('Image Alt')
     })
 
+    it('ignores MathML duplicated by KaTeX', () => {
+      const headline = new Element(`h${headlineIndex}`, {}, [
+        new Element('span', { class: 'katex-mathml' }, [
+          new Element('math', {}, [new Element('mi', {}, [new Text('alpha')])]),
+        ]),
+        new Element('span', { class: 'katex-html', 'aria-hidden': 'true' }, [new Text('alpha')]),
+      ])
+      const document = new Document([headline])
+      expect(extractFirstHeading(document)).toBe('alpha')
+    })
+
     it('extracts only the first found headline', () => {
       const headline1 = new Element(`h${headlineIndex}`, {}, [new Text(`headline${headlineIndex}`)])
       const headline2 = new Element(`h${headlineIndex}`, {}, [new Text('headline1')])
diff --git a/commons/src/title-extraction/extract-first-heading.ts b/commons/src/title-extraction/extract-first-heading.ts
index ddd77a1f5..e5a99d101 100644
--- a/commons/src/title-extraction/extract-first-heading.ts
+++ b/commons/src/title-extraction/extract-first-heading.ts
@@ -43,6 +43,8 @@ function extractInnerTextFromTag(node: Element): string {
     return ''
   } else if (node.name === 'img') {
     return findAttribute(node, 'alt')?.value ?? ''
+  } else if (node.name === 'math') {
+    return ''
   } else {
     return node.children.reduce((state, child) => {
       return state + extractInnerTextFromNode(child)
diff --git a/markdown-it-plugins/src/toc/index.test.ts b/markdown-it-plugins/src/toc/index.test.ts
index 5a2df7df1..b68cd6383 100644
--- a/markdown-it-plugins/src/toc/index.test.ts
+++ b/markdown-it-plugins/src/toc/index.test.ts
@@ -183,4 +183,35 @@ describe('toc', () => {
     `),
     ).toMatchSnapshot()
   })
+
+  it('includes inline math in heading names', () => {
+    const callback = jest.fn()
+    const markdownIt = new MarkdownIt().use(toc, { callback })
+    markdownIt.inline.ruler.before('text', 'inlineMath', (state, silent) => {
+      if (state.src.slice(state.pos, state.pos + 8) !== '$\\alpha$') {
+        return false
+      }
+
+      if (!silent) {
+        const token = state.push('inline_math', '', 0)
+        token.content = '\\alpha'
+      }
+      state.pos += 8
+      return true
+    })
+
+    markdownIt.render('# $\\alpha$-foo')
+
+    expect(callback).toHaveBeenCalledWith({
+      children: [
+        {
+          children: [],
+          level: 1,
+          name: '\\alpha-foo',
+        },
+      ],
+      level: 0,
+      name: '',
+    })
+  })
 })
diff --git a/markdown-it-plugins/src/toc/toc-options.ts b/markdown-it-plugins/src/toc/toc-options.ts
index 5564f4921..817e16908 100644
--- a/markdown-it-plugins/src/toc/toc-options.ts
+++ b/markdown-it-plugins/src/toc/toc-options.ts
@@ -37,6 +37,6 @@ export const defaultOptions: TocOptions = {
   linkClass: '',
   level: 1,
   listType: 'ol',
-  allowedTokenTypes: ['text', 'code_inline'],
+  allowedTokenTypes: ['text', 'code_inline', 'math', 'inline_math', 'display_math'],
   slugify: defaultSlugify,
 }