diff --git a/packages/docusaurus-plugin-openapi-docs/src/markdown/utils.ts b/packages/docusaurus-plugin-openapi-docs/src/markdown/utils.ts
index f0ffb83b3..c4dfe1663 100644
--- a/packages/docusaurus-plugin-openapi-docs/src/markdown/utils.ts
+++ b/packages/docusaurus-plugin-openapi-docs/src/markdown/utils.ts
@@ -5,6 +5,10 @@
  * LICENSE file in the root directory of this source tree.
  * ========================================================================== */
 
+/**
+ * Children in the plugin does not accept DOM elements, when compared with Children in the theme.
+ * It is designed for rendering HTML a strings.
+ */
 export type Children = string | undefined | (string | string[] | undefined)[];
 
 export type Props = Record<string, any> & { children?: Children };
diff --git a/packages/docusaurus-theme-openapi-docs/src/markdown/utils.ts b/packages/docusaurus-theme-openapi-docs/src/markdown/utils.ts
index 1c9539170..b3b53872a 100644
--- a/packages/docusaurus-theme-openapi-docs/src/markdown/utils.ts
+++ b/packages/docusaurus-theme-openapi-docs/src/markdown/utils.ts
@@ -7,9 +7,10 @@
 
 import { ReactNode } from "react";
 
-export type Children = ReactNode | string | undefined | (string | undefined)[];
+/** @deprecated use ReactNode from React instead */
+export type Children = ReactNode;
 
-export type Props = Record<string, any> & { children?: Children };
+export type Props = Record<string, any> & { children?: ReactNode };
 
 export function create(tag: string, props: Props): string {
   const { children, ...rest } = props;
@@ -24,8 +25,8 @@ export function create(tag: string, props: Props): string {
 
 export function guard<T>(
   value: T | undefined | string,
-  cb: (value: T) => Children
-): string {
+  cb: (value: T) => ReactNode
+) {
   if (!!value || value === 0) {
     const children = cb(value as T);
     return render(children);
@@ -33,11 +34,11 @@ export function guard<T>(
   return "";
 }
 
-export function render(children: Children): string {
+export function render(children: ReactNode) {
   if (Array.isArray(children)) {
     return children.filter((c) => c !== undefined).join("");
   }
-  return (children as string) ?? "";
+  return children ?? "";
 }
 
 export function toString(value: any): string | undefined {