diff --git a/alfa-service/src/main/java/de/ozgcloud/alfa/collaboration/OrganisationsEinheitController.java b/alfa-service/src/main/java/de/ozgcloud/alfa/collaboration/OrganisationsEinheitController.java
index 958c49e7fbaa741d468e87191bc211095e1f4d64..911717902889dfc59197573842a89151a6792c83 100644
--- a/alfa-service/src/main/java/de/ozgcloud/alfa/collaboration/OrganisationsEinheitController.java
+++ b/alfa-service/src/main/java/de/ozgcloud/alfa/collaboration/OrganisationsEinheitController.java
@@ -54,7 +54,7 @@ class OrganisationsEinheitController {
 		return ResponseEntity.of(Optional.of(service.getById(organisationsEinheitId)).map(assembler::toModel));
 	}
 
-	@CrossOrigin(originPatterns = "${ozgcloud.domain.url-pattern}")
+	@CrossOrigin(originPatterns = "${ozgcloud.domain.url-pattern:https://*.ozg-cloud.de}")
 	@GetMapping(params = { SEARCH_BY_PARAM })
 	public CollectionModel<EntityModel<OrganisationsEinheitHeader>> search(@RequestParam String searchBy) {
 		return headerModelAssembler.toCollectionModel(service.searchOrganisationsEinheiten(searchBy).toList());