diff --git a/plugins/auth-backend/src/lib/resolvers/CatalogAuthResolverContext.ts b/plugins/auth-backend/src/lib/resolvers/CatalogAuthResolverContext.ts
index 1f4b2766e8..ba12543e1a 100644
--- a/plugins/auth-backend/src/lib/resolvers/CatalogAuthResolverContext.ts
+++ b/plugins/auth-backend/src/lib/resolvers/CatalogAuthResolverContext.ts
@@ -124,7 +124,7 @@ export class CatalogAuthResolverContext implements AuthResolverContext {
       result = res.items;
     } else if ('filter' in query) {
       const filter = [query.filter].flat().map(value => {
-        if (!('kind' in Object.keys(value).map(key => key.toLowerCase()))) {
+        if (!('kind' in Object.keys(value).map(key => key.toLocaleLowerCase('en-US')))) {
           return {
             ...value,
             kind: 'user',