diff --git a/packages/zmarkdown/__tests__/__snapshots__/regressions.test.js.snap b/packages/zmarkdown/__tests__/__snapshots__/regressions.test.js.snap
index 64fd3a39..b5e56e67 100644
--- a/packages/zmarkdown/__tests__/__snapshots__/regressions.test.js.snap
+++ b/packages/zmarkdown/__tests__/__snapshots__/regressions.test.js.snap
@@ -1,7 +1,7 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
 exports[`Regression tests HTML endpoint #188 It does not crash on unsupported languages fenced code blocks 1`] = `
-"<h3 id=\\"foo\\">foo<a aria-hidden=\\"true\\" tabindex=\\"-1\\" href=\\"#foo\\"><span class=\\"icon icon-link\\"></span></a></h3>
+"<h1 id=\\"foo\\">foo<a aria-hidden=\\"true\\" tabindex=\\"-1\\" href=\\"#foo\\"><span class=\\"icon icon-link\\"></span></a></h1>
 <div class=\\"hljs-code-div hljs-code-foobar\\"><pre><code class=\\"hljs language-foobar\\">console.error(\\"foo\\", true)
 </code></pre></div>
 <div class=\\"hljs-code-div hljs-code-js\\"><pre><code class=\\"hljs language-js\\"><span class=\\"hljs-built_in\\">console</span>.error(<span class=\\"hljs-string\\">\\"foo\\"</span>, <span class=\\"hljs-literal\\">true</span>)
diff --git a/packages/zmarkdown/__tests__/__snapshots__/server.test.js.snap b/packages/zmarkdown/__tests__/__snapshots__/server.test.js.snap
index ffa18ff3..88731e7e 100644
--- a/packages/zmarkdown/__tests__/__snapshots__/server.test.js.snap
+++ b/packages/zmarkdown/__tests__/__snapshots__/server.test.js.snap
@@ -1,11 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`HTML endpoint accepts POSTed markdown 1`] = `"<h3 id=\\"foo\\">foo<a aria-hidden=\\"true\\" tabindex=\\"-1\\" href=\\"#foo\\"><span class=\\"icon icon-link\\"></span></a></h3>"`;
-
-exports[`HTML endpoint can enforce shifting level 1`] = `
-"<h2 id=\\"i-have-seen-a-dolphin\\">I have seen a dolphin<a aria-hidden=\\"true\\" tabindex=\\"-1\\" href=\\"#i-have-seen-a-dolphin\\"><span class=\\"icon icon-link\\"></span></a></h2>
-<p>On a camera. What is happening with animals these days?\\"</p>"
-`;
+exports[`HTML endpoint accepts POSTed markdown 1`] = `"<h1 id=\\"foo\\">foo<a aria-hidden=\\"true\\" tabindex=\\"-1\\" href=\\"#foo\\"><span class=\\"icon icon-link\\"></span></a></h1>"`;
 
 exports[`HTML endpoint correctly renders manifest 1`] = `
 Object {
@@ -25,9 +20,14 @@ Object {
 }
 `;
 
+exports[`HTML endpoint enforce level shifting by default 1`] = `
+"<h2 id=\\"i-have-seen-a-dolphin\\">I have seen a dolphin<a aria-hidden=\\"true\\" tabindex=\\"-1\\" href=\\"#i-have-seen-a-dolphin\\"><span class=\\"icon icon-link\\"></span></a></h2>
+<p>On a camera. What is happening with animals these days?\\"</p>"
+`;
+
 exports[`HTML endpoint produces statistics when configured 1`] = `
 "<p>7 chars</p>
-<h3 id=\\"13-chars-here\\">13 chars here<a aria-hidden=\\"true\\" tabindex=\\"-1\\" href=\\"#13-chars-here\\"><span class=\\"icon icon-link\\"></span></a></h3>
+<h1 id=\\"13-chars-here\\">13 chars here<a aria-hidden=\\"true\\" tabindex=\\"-1\\" href=\\"#13-chars-here\\"><span class=\\"icon icon-link\\"></span></a></h1>
 <p><a href=\\"https.//github.com/zestedesavoir/zmarkdown\\">13 chars here</a></p>
 <figure><img src=\\"https.//github.com/zestedesavoir/zmarkdown\\" alt=\\"13 chars here\\" loading=\\"lazy\\"><figcaption>13 chars here</figcaption></figure>
 <figure><img src=\\"https.//github.com/zestedesavoir/zmarkdown\\" alt=\\"no chars here\\" loading=\\"lazy\\"><figcaption>13 chars here</figcaption></figure>"
diff --git a/packages/zmarkdown/__tests__/server.test.js b/packages/zmarkdown/__tests__/server.test.js
index 574c6ab0..67ab0c21 100644
--- a/packages/zmarkdown/__tests__/server.test.js
+++ b/packages/zmarkdown/__tests__/server.test.js
@@ -189,14 +189,14 @@ describe('HTML endpoint', () => {
     expect(metadata.hasQuizz).toBe(true)
   })
 
-  it('can enforce shifting level', async () => {
+  it('enforce level shifting by default', async () => {
     const text = dedent(`
     # I have seen a dolphin
     
     On a camera. What is happening with animals these days?"
     `)
 
-    const response = await a.post(html, {md: text, opts: {heading_shift: 1, enforce_shift: true}})
+    const response = await a.post(html, {md: text, opts: {heading_shift: 1}})
     expect(response.status).toBe(200)
 
     const [content] = response.data
diff --git a/packages/zmarkdown/server/factories/controller-factory.js b/packages/zmarkdown/server/factories/controller-factory.js
index 659f38b1..20980c97 100644
--- a/packages/zmarkdown/server/factories/controller-factory.js
+++ b/packages/zmarkdown/server/factories/controller-factory.js
@@ -30,7 +30,7 @@ module.exports = (givenProc, template) => (req, res, next) => {
           localOptions.ic_shift = localOptions.depth
         }
 
-        const mergedOptions = Object.assign({ enforce_shift: true }, options, localOptions)
+        const mergedOptions = Object.assign({}, options, localOptions)
         const processor = processorFactory(givenProc, mergedOptions)
 
         return processor(text)
diff --git a/packages/zmarkdown/server/factories/processor-factory.js b/packages/zmarkdown/server/factories/processor-factory.js
index 44f4cdd7..fc5deb31 100644
--- a/packages/zmarkdown/server/factories/processor-factory.js
+++ b/packages/zmarkdown/server/factories/processor-factory.js
@@ -19,12 +19,10 @@ module.exports = (processor, opts = {}) => {
   }
 
   if (processor === 'html') {
-    if (!opts.enforce_shift) opts.heading_shift = 2
     opts.disable_images_download = true
   }
 
   if (processor === 'latex') {
-    if (!opts.enforce_shift) opts.heading_shift = 0
     opts.disable_ping = true
     opts.disable_jsfiddle = true
   } else {
@@ -32,7 +30,6 @@ module.exports = (processor, opts = {}) => {
   }
 
   if (processor === 'epub') {
-    if (!opts.enforce_shift) opts.heading_shift = 2
     opts.disable_ping = true
     opts.disable_jsfiddle = true
     opts.inline = false