diff --git a/npm/ng-packs/packages/core/src/lib/models/environment.ts b/npm/ng-packs/packages/core/src/lib/models/environment.ts
index dc5fab9ef7..46596685b0 100644
--- a/npm/ng-packs/packages/core/src/lib/models/environment.ts
+++ b/npm/ng-packs/packages/core/src/lib/models/environment.ts
@@ -21,7 +21,7 @@ export interface ApplicationInfo {
 export interface ApiConfig {
   [key: string]: string;
   url: string;
-  rootNamespace: string;
+  rootNamespace?: string;
 }
 
 export interface Apis {