diff --git a/packages/catalog-client/api-report.md b/packages/catalog-client/api-report.md
index 416f1bc4fd..47c6ff7f36 100644
--- a/packages/catalog-client/api-report.md
+++ b/packages/catalog-client/api-report.md
@@ -251,15 +251,13 @@ export type GetPaginatedEntitiesCursorRequest = {
 };
 
 // @alpha
-export type GetPaginatedEntitiesInitialRequest =
-  | {
-      fields?: string[];
-      limit?: number;
-      filter?: EntityFilterQuery;
-      sortFields?: EntityOrderQuery;
-      query?: string;
-    }
-  | undefined;
+export type GetPaginatedEntitiesInitialRequest = {
+  fields?: string[];
+  limit?: number;
+  filter?: EntityFilterQuery;
+  sortFields?: EntityOrderQuery;
+  query?: string;
+};
 
 // @alpha
 export type GetPaginatedEntitiesRequest =
diff --git a/packages/catalog-client/src/CatalogClient.ts b/packages/catalog-client/src/CatalogClient.ts
index ba410beb92..7347535ca6 100644
--- a/packages/catalog-client/src/CatalogClient.ts
+++ b/packages/catalog-client/src/CatalogClient.ts
@@ -211,13 +211,13 @@ export class CatalogClient implements CatalogApi {
    * @alpha
    */
   async getPaginatedEntities?(
-    request?: GetPaginatedEntitiesRequest,
+    request: GetPaginatedEntitiesRequest = {},
     options?: CatalogRequestOptions,
   ): Promise<GetPaginatedEntitiesResponse> {
     const params: string[] = [];
 
     if (isPaginatedEntitiesInitialRequest(request)) {
-      const { fields = [], filter, limit, sortFields, query } = request ?? {};
+      const { fields = [], filter, limit, sortFields, query } = request;
       params.push(...this.getParams(filter));
 
       if (limit !== undefined) {
diff --git a/packages/catalog-client/src/types/api.ts b/packages/catalog-client/src/types/api.ts
index d6aeba5d1d..4e7f679072 100644
--- a/packages/catalog-client/src/types/api.ts
+++ b/packages/catalog-client/src/types/api.ts
@@ -396,15 +396,13 @@ export type GetPaginatedEntitiesRequest =
  *
  * @alpha
  */
-export type GetPaginatedEntitiesInitialRequest =
-  | {
-      fields?: string[];
-      limit?: number;
-      filter?: EntityFilterQuery;
-      sortFields?: EntityOrderQuery;
-      query?: string;
-    }
-  | undefined;
+export type GetPaginatedEntitiesInitialRequest = {
+  fields?: string[];
+  limit?: number;
+  filter?: EntityFilterQuery;
+  sortFields?: EntityOrderQuery;
+  query?: string;
+};
 
 /**
  * A request type for {@link CatalogClient.getPaginatedEntities}.
diff --git a/packages/catalog-client/src/utils.ts b/packages/catalog-client/src/utils.ts
index 5a26053fb9..8a2eb9c06d 100644
--- a/packages/catalog-client/src/utils.ts
+++ b/packages/catalog-client/src/utils.ts
@@ -23,9 +23,6 @@ import {
 export function isPaginatedEntitiesInitialRequest(
   request: GetPaginatedEntitiesInitialRequest,
 ): request is GetPaginatedEntitiesInitialRequest {
-  if (!request) {
-    return true;
-  }
   return !(request as GetPaginatedEntitiesCursorRequest).cursor;
 }