diff --git a/aio/src/app/custom-elements/resource/resource.model.ts b/aio/src/app/custom-elements/resource/resource.model.ts
index 87c299a01e..b1d4a133fa 100644
--- a/aio/src/app/custom-elements/resource/resource.model.ts
+++ b/aio/src/app/custom-elements/resource/resource.model.ts
@@ -1,18 +1,18 @@
-export class Category {
+export interface Category {
   id: string;    // "education"
   title: string; // "Education"
   order: number; // 2
   subCategories: SubCategory[];
 }
 
-export class SubCategory {
+export interface SubCategory {
   id: string;    // "books"
   title: string; // "Books"
   order: number; // 1
   resources: Resource[];
 }
 
-export class Resource {
+export interface Resource {
   category: string;    // "Education"
   subCategory: string; // "Books"
   id: string;          // "-KLI8vJ0ZkvWhqPembZ7"