diff --git a/packages/ui/components/form-core/src/FocusMixin.js b/packages/ui/components/form-core/src/FocusMixin.js
index 54aaf735d..a1102cdaf 100644
--- a/packages/ui/components/form-core/src/FocusMixin.js
+++ b/packages/ui/components/form-core/src/FocusMixin.js
@@ -48,6 +48,7 @@ const FocusMixinImplementation = superclass =>
        * @type {boolean}
        */
       this.focusedVisible = false;
+      this.autofocus = false;
     }
 
     connectedCallback() {
@@ -62,15 +63,11 @@ const FocusMixinImplementation = superclass =>
     }
 
     /**
-     * Gets called when an attribute is changed.
-     * @param {String} name
-     * @param {String | null} _old
-     * @param {String | null} value
-     * @protected
+     * @param {import('lit').PropertyValues } changedProperties
      */
-    attributeChangedCallback(name, _old, value) {
-      super.attributeChangedCallback(name, _old, value);
-      if (name === 'autofocus') {
+    updated(changedProperties) {
+      super.updated(changedProperties);
+      if (changedProperties.has('autofocus')) {
         this.__syncAutofocusToFocusableElement();
       }
     }
diff --git a/packages/ui/components/form-core/types/FocusMixinTypes.ts b/packages/ui/components/form-core/types/FocusMixinTypes.ts
index 11d79aa36..3f3445c9e 100644
--- a/packages/ui/components/form-core/types/FocusMixinTypes.ts
+++ b/packages/ui/components/form-core/types/FocusMixinTypes.ts
@@ -25,12 +25,6 @@ export declare class FocusHost {
    */
   blur(): void;
 
-  /**
-  * Synchronizes property values when attributes change.
-  * @category attributes
-  */
-    attributeChangedCallback(name: string, _old: string | null, value: string | null): void;
-
   /**
    * The focusable element:
    * could be an input, textarea, select, button or any other element with tabindex > -1