diff --git a/src/components-examples/material/form-field/form-field-custom-control/form-field-custom-control-example.ts b/src/components-examples/material/form-field/form-field-custom-control/form-field-custom-control-example.ts
index c1348bf549ce..54ba434c84d0 100644
--- a/src/components-examples/material/form-field/form-field-custom-control/form-field-custom-control-example.ts
+++ b/src/components-examples/material/form-field/form-field-custom-control/form-field-custom-control-example.ts
@@ -175,6 +175,7 @@ export class MyTelInput implements ControlValueAccessor, MatFormFieldControl<MyT
       this._placeholder();
       this._required();
       this._disabled();
+      this._focused();
       // Propagate state changes.
       untracked(() => this.stateChanges.next());
     });