diff --git a/.changeset/stale-clocks-shake.md b/.changeset/stale-clocks-shake.md
new file mode 100644
index 0000000..b684fbc
--- /dev/null
+++ b/.changeset/stale-clocks-shake.md
@@ -0,0 +1,5 @@
+---
+'@chialab/quantum': patch
+---
+
+Fix `insertAdjacentElement` method.
diff --git a/docs/index.md b/docs/index.md
index 0ce0a0e..b6c0435 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -8,7 +8,7 @@ titleTemplate: Custom elements composition made easy
 hero:
     name: 'Quantum'
     text: ''
-    tagline: 'Custom elements composition made easy'
+    tagline: 'Custom elements composition made easy.'
     actions:
         - theme: brand
           text: npm i @chialab/quantum
diff --git a/src/Element.js b/src/Element.js
index 49dfb8f..17d9e68 100644
--- a/src/Element.js
+++ b/src/Element.js
@@ -223,7 +223,7 @@ export function extendElement(Element) {
             switch (position) {
                 case 'beforebegin':
                     if (!parentRealm) {
-                        return /** @type {import('./utils.js').ValueDescriptor} */ (insertAdjacentElement).value.apply(
+                        return /** @type {import('./utils.js').ValueDescriptor} */ (insertAdjacentElement).value.call(
                             this,
                             position,
                             node
@@ -232,7 +232,7 @@ export function extendElement(Element) {
                     return parentRealm.insertBefore(this, node);
                 case 'afterend':
                     if (!parentRealm) {
-                        return /** @type {import('./utils.js').ValueDescriptor} */ (insertAdjacentElement).value.apply(
+                        return /** @type {import('./utils.js').ValueDescriptor} */ (insertAdjacentElement).value.call(
                             this,
                             position,
                             node
@@ -241,7 +241,7 @@ export function extendElement(Element) {
                     return parentRealm.insertBefore(this.nextSibling, node);
                 case 'afterbegin':
                     if (!realm) {
-                        return /** @type {import('./utils.js').ValueDescriptor} */ (insertAdjacentElement).value.apply(
+                        return /** @type {import('./utils.js').ValueDescriptor} */ (insertAdjacentElement).value.call(
                             this,
                             position,
                             node
@@ -250,7 +250,7 @@ export function extendElement(Element) {
                     return realm.prepend(node);
                 case 'beforeend':
                     if (!realm) {
-                        return /** @type {import('./utils.js').ValueDescriptor} */ (insertAdjacentElement).value.apply(
+                        return /** @type {import('./utils.js').ValueDescriptor} */ (insertAdjacentElement).value.call(
                             this,
                             position,
                             node