diff --git a/src/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php b/src/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
index a0b68759f9942..04ca858598c9f 100644
--- a/src/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
+++ b/src/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php
@@ -859,8 +859,7 @@ public function update_item( $request ) {
 			if ( is_wp_error( $prepared_args ) ) {
 				return $prepared_args;
 			}
-
-			if ( isset( $prepared_args['comment_content'] ) && empty( $prepared_args['comment_content'] ) ) {
+			if ( ! $this->check_is_comment_content_allowed( $prepared_args ) ) {
 				return new WP_Error(
 					'rest_comment_content_invalid',
 					__( 'Invalid comment content.' ),