diff --git a/authority-portal-backend/authority-portal-api-client-ts/src/AuthorityPortalClient.ts b/authority-portal-backend/authority-portal-api-client-ts/src/AuthorityPortalClient.ts
index 060fdf827..dfd3af2a9 100644
--- a/authority-portal-backend/authority-portal-api-client-ts/src/AuthorityPortalClient.ts
+++ b/authority-portal-backend/authority-portal-api-client-ts/src/AuthorityPortalClient.ts
@@ -10,7 +10,6 @@
  * Contributors:
  *      sovity GmbH - initial implementation
  */
-
 import {Configuration, ConfigurationParameters, UiApi} from './generated';
 
 /**
diff --git a/authority-portal-backend/authority-portal-api-client-ts/vite.config.ts b/authority-portal-backend/authority-portal-api-client-ts/vite.config.ts
index 4fbe410e8..b1b27cb74 100644
--- a/authority-portal-backend/authority-portal-api-client-ts/vite.config.ts
+++ b/authority-portal-backend/authority-portal-api-client-ts/vite.config.ts
@@ -10,7 +10,6 @@
  * Contributors:
  *      sovity GmbH - initial implementation
  */
-
 // noinspection JSUnusedGlobalSymbols
 import {resolve} from 'path';
 import {defineConfig} from 'vite';
diff --git a/authority-portal-frontend/src/app/core/utils/validators/zipcode-validator.ts b/authority-portal-frontend/src/app/core/utils/validators/zipcode-validator.ts
index bb7ef9c6b..e087193ce 100644
--- a/authority-portal-frontend/src/app/core/utils/validators/zipcode-validator.ts
+++ b/authority-portal-frontend/src/app/core/utils/validators/zipcode-validator.ts
@@ -14,7 +14,7 @@
 import {ValidatorFn} from '@angular/forms';
 import {namedRegexValidator} from './named-regex-validator';
 
-export const validZipCodePattern = /^[a-z0-9][a-z0-9\- ]{3,10}[a-z0-9]$/;
+export const validZipCodePattern = /^[a-zA-Z0-9][a-zA-Z0-9\- ]{3,10}[a-zA-Z0-9]$/;
 
 export const zipCodeValidator: ValidatorFn = namedRegexValidator(
   validZipCodePattern,