diff --git a/lib/app-router.js b/lib/app-router.js
index 3329b14..c60104c 100644
--- a/lib/app-router.js
+++ b/lib/app-router.js
@@ -19,22 +19,20 @@ customElements.define('app-router', class AppRouter extends HTMLElement {
         await element.load(page, opts)
 
         const isDocumentationPage = pathname.startsWith('/documentation')
-        if (isDocumentationPage && !!opts.header) {
-          const anchor = opts.header
-          if (anchor) {
-            const element = this.routes['/documentation'].shadowRoot.getElementById(anchor)
-            element.scrollIntoView()
-            const elementY = Math.floor(element.getBoundingClientRect().y)
-            const pearHeaderHeight = 170
-            const extraScroll = 80
-            const isUnderPearHeader = elementY < pearHeaderHeight + extraScroll
-            if (isUnderPearHeader) {
-              window.scrollBy(0, -1 * (pearHeaderHeight + extraScroll - elementY))
-            }
+        const anchor = opts.anchor
+        if (isDocumentationPage && anchor) {
+          const element = this.routes['/documentation'].shadowRoot.getElementById(anchor)
+          element.scrollIntoView()
+          const elementY = Math.floor(element.getBoundingClientRect().y)
+          const pearHeaderHeight = 170
+          const extraScroll = 80
+          const isUnderPearHeader = elementY < pearHeaderHeight + extraScroll
+          if (isUnderPearHeader) {
+            window.scrollBy(0, -1 * (pearHeaderHeight + extraScroll - elementY))
           }
         }
 
-        if (!opts.back) history.pushState({ pathname, header: opts.header }, null, pathname)
+        if (!opts.back) history.pushState({ pathname, anchor: opts.anchor }, null, pathname)
         break
       }
     }
@@ -47,8 +45,8 @@ customElements.define('app-router', class AppRouter extends HTMLElement {
     const { tagName } = evt.target.getRootNode().host || {}
     const route = tagName ? this.getAttribute(tagName) : ''
     if (evt.target.pathname.startsWith(route)) {
-      const header = evt.target.href.split('#')[1]
-      this.load(evt.target.pathname, { header }).catch(console.error)
+      const anchor = evt.target.href.split('#')[1]
+      this.load(evt.target.pathname, { anchor }).catch(console.error)
     } else {
       this.load(route + evt.target.pathname).catch(console.error)
     }
@@ -64,7 +62,7 @@ customElements.define('app-router', class AppRouter extends HTMLElement {
     this.addEventListener('click', (evt) => this.link(evt))
 
     window.addEventListener('popstate', (evt) => {
-      this.load(evt.state?.pathname, { back: true, header: evt.state?.header }).catch(console.error)
+      this.load(evt.state?.pathname, { back: true, anchor: evt.state?.anchor }).catch(console.error)
     })
 
     window.addEventListener('load', () => {