diff --git a/src/wp-includes/option.php b/src/wp-includes/option.php
index abc7b6f91d..866cbcc480 100644
--- a/src/wp-includes/option.php
+++ b/src/wp-includes/option.php
@@ -1819,6 +1819,27 @@ function register_initial_settings() {
 		'description'  => __( 'Blog pages show at most.' ),
 		'default'      => 10,
 	) );
+
+	register_setting( 'discussion', 'default_ping_status', array(
+		'show_in_rest' => array(
+			'schema'   => array(
+				'enum' => array( 'open', 'closed' ),
+			),
+		),
+		'type'         => 'string',
+		'description'  => __( 'Allow link notifications from other blogs (pingbacks and trackbacks) on new articles.' ),
+	) );
+
+	register_setting( 'discussion', 'default_comment_status', array(
+		'show_in_rest' => array(
+			'schema'   => array(
+				'enum' => array( 'open', 'closed' ),
+			),
+		),
+		'type'         => 'string',
+		'description'  => __( 'Allow people to post comments on new articles.' ),
+	) );
+
 }
 
 /**
diff --git a/tests/phpunit/tests/rest-api/rest-settings-controller.php b/tests/phpunit/tests/rest-api/rest-settings-controller.php
index 530a5398ff..f3d7b0a12c 100644
--- a/tests/phpunit/tests/rest-api/rest-settings-controller.php
+++ b/tests/phpunit/tests/rest-api/rest-settings-controller.php
@@ -57,6 +57,8 @@ class WP_Test_REST_Settings_Controller extends WP_Test_REST_Controller_Testcase
 			'default_category',
 			'default_post_format',
 			'posts_per_page',
+			'default_ping_status',
+			'default_comment_status',
 		), array_keys( $data ) );
 	}
 
@@ -228,6 +230,16 @@ class WP_Test_REST_Settings_Controller extends WP_Test_REST_Controller_Testcase
 		$this->assertEquals( 10, $data['posts_per_page'] );
 	}
 
+	public function test_update_item_with_invalid_enum() {
+		update_option( 'posts_per_page', 9 );
+
+		wp_set_current_user( $this->administrator );
+		$request = new WP_REST_Request( 'PUT', '/wp/v2/settings' );
+		$request->set_param( 'default_ping_status', 'open&closed' );
+		$response = $this->server->dispatch( $request );
+		$this->assertErrorResponse( 'rest_invalid_param', $response, 400 );
+	}
+
 	public function test_delete_item() {
 	}