diff --git a/packages/core-api/src/apis/system/ApiRef.ts b/packages/core-api/src/apis/system/ApiRef.ts
index 0e1eb177c8..e61036c61c 100644
--- a/packages/core-api/src/apis/system/ApiRef.ts
+++ b/packages/core-api/src/apis/system/ApiRef.ts
@@ -18,7 +18,7 @@ import type { ApiRef } from './types';
 
 export type ApiRefConfig = {
   id: string;
-  description: string;
+  description?: string;
 };
 
 class ApiRefImpl<T> implements ApiRef<T> {
@@ -38,7 +38,7 @@ class ApiRefImpl<T> implements ApiRef<T> {
     return this.config.id;
   }
 
-  get description(): string {
+  get description() {
     return this.config.description;
   }
 
diff --git a/packages/core-api/src/apis/system/types.ts b/packages/core-api/src/apis/system/types.ts
index 6234a55c71..a4bc95a3c3 100644
--- a/packages/core-api/src/apis/system/types.ts
+++ b/packages/core-api/src/apis/system/types.ts
@@ -16,7 +16,7 @@
 
 export type ApiRef<T> = {
   id: string;
-  description: string;
+  description?: string;
   T: T;
 };