diff --git a/packages/elements/src/create-custom-element.ts b/packages/elements/src/create-custom-element.ts
index 1e03bbec3f..4797d2136c 100644
--- a/packages/elements/src/create-custom-element.ts
+++ b/packages/elements/src/create-custom-element.ts
@@ -52,15 +52,13 @@ export type WithProperties<P> = {
 /**
  * Initialization configuration for the NgElementConstructor which contains the injector to be used
  * for retrieving the component's factory as well as the default context for the component. May
- * provide a custom strategy factory to be used instead of the default. May provide a custom mapping
- * of attribute names to component inputs.
+ * provide a custom strategy factory to be used instead of the default.
  *
  * @experimental
  */
 export interface NgElementConfig {
   injector: Injector;
   strategyFactory?: NgElementStrategyFactory;
-  attributeToPropertyInputs?: {[key: string]: string};
 }
 
 /**
@@ -84,8 +82,7 @@ export function createCustomElement<P>(
   const strategyFactory =
       config.strategyFactory || new ComponentNgElementStrategyFactory(component, config.injector);
 
-  const attributeToPropertyInputs =
-      config.attributeToPropertyInputs || getDefaultAttributeToPropertyInputs(inputs);
+  const attributeToPropertyInputs = getDefaultAttributeToPropertyInputs(inputs);
 
   class NgElementImpl extends NgElement {
     static readonly observedAttributes = Object.keys(attributeToPropertyInputs);
diff --git a/packages/elements/test/create-custom-element_spec.ts b/packages/elements/test/create-custom-element_spec.ts
index b6cdb4ee98..43f643bbd8 100644
--- a/packages/elements/test/create-custom-element_spec.ts
+++ b/packages/elements/test/create-custom-element_spec.ts
@@ -93,39 +93,6 @@ if (typeof customElements !== 'undefined') {
       expect(strategy.inputs.get('fooFoo')).toBe('foo-foo-value');
       expect(strategy.inputs.get('barBar')).toBe('barBar-value');
     });
-
-    describe('with different attribute strategy', () => {
-      let NgElementCtorWithChangedAttr: NgElementConstructor<WithFooBar>;
-      let element: HTMLElement;
-
-      beforeAll(() => {
-        strategyFactory = new TestStrategyFactory();
-        strategy = strategyFactory.testStrategy;
-        NgElementCtorWithChangedAttr = createCustomElement(TestComponent, {
-          injector,
-          strategyFactory,
-          attributeToPropertyInputs: {'attr-1': 'fooFoo', 'attr-2': 'barbar'}
-        });
-
-        customElements.define('test-element-with-changed-attributes', NgElementCtorWithChangedAttr);
-      });
-
-      beforeEach(() => { element = new NgElementCtorWithChangedAttr(injector); });
-
-      it('should affect which attributes are watched', () => {
-        expect(NgElementCtorWithChangedAttr.observedAttributes).toEqual(['attr-1', 'attr-2']);
-      });
-
-      it('should send attribute values as inputs when connected', () => {
-        const element = new NgElementCtorWithChangedAttr(injector);
-        element.setAttribute('attr-1', 'value-1');
-        element.setAttribute('attr-2', 'value-2');
-        element.connectedCallback();
-
-        expect(strategy.getInputValue('fooFoo')).toBe('value-1');
-        expect(strategy.getInputValue('barbar')).toBe('value-2');
-      });
-    });
   });
 }
 
diff --git a/tools/public_api_guard/elements/elements.d.ts b/tools/public_api_guard/elements/elements.d.ts
index 748c2d3175..4902a453b8 100644
--- a/tools/public_api_guard/elements/elements.d.ts
+++ b/tools/public_api_guard/elements/elements.d.ts
@@ -12,9 +12,6 @@ export declare abstract class NgElement extends HTMLElement {
 
 /** @experimental */
 export interface NgElementConfig {
-    attributeToPropertyInputs?: {
-        [key: string]: string;
-    };
     injector: Injector;
     strategyFactory?: NgElementStrategyFactory;
 }