diff --git a/backend/src/config/mock/customization.config.mock.ts b/backend/src/config/mock/customization.config.mock.ts
index a8e25edba..e294f1f7c 100644
--- a/backend/src/config/mock/customization.config.mock.ts
+++ b/backend/src/config/mock/customization.config.mock.ts
@@ -15,9 +15,9 @@ export function createDefaultMockCustomizationConfig(): CustomizationConfig {
       customLogo: '',
     },
     specialUrls: {
-      privacy: '/test/privacy',
-      termsOfUse: '/test/termsOfUse',
-      imprint: '/test/imprint',
+      privacy: 'https://md.example.org/test/privacy',
+      termsOfUse: 'https://md.example.org/test/termsOfUse',
+      imprint: 'https://md.example.org/test/imprint',
     },
   };
 }
diff --git a/backend/src/config/mock/external-services.config.mock.ts b/backend/src/config/mock/external-services.config.mock.ts
index b3c584953..b09d7e5a8 100644
--- a/backend/src/config/mock/external-services.config.mock.ts
+++ b/backend/src/config/mock/external-services.config.mock.ts
@@ -10,8 +10,8 @@ import { ExternalServicesConfig } from '../external-services.config';
 
 export function createDefaultMockExternalServicesConfig(): ExternalServicesConfig {
   return {
-    plantUmlServer: 'plantuml.example.com',
-    imageProxy: 'imageProxy.example.com',
+    plantUmlServer: 'https://plantuml.example.com',
+    imageProxy: 'https://imageProxy.example.com',
   };
 }