diff --git a/Smartes-Klassenzimmer-Frontend/src/lib/api.ts b/Smartes-Klassenzimmer-Frontend/src/lib/api.ts
index 0971369..7e5e385 100644
--- a/Smartes-Klassenzimmer-Frontend/src/lib/api.ts
+++ b/Smartes-Klassenzimmer-Frontend/src/lib/api.ts
@@ -2,7 +2,7 @@ import { browser } from '$app/environment';
 
 // API Client für Backend-Kommunikation
 const API_BASE_URL = browser 
-	? (import.meta.env.VITE_API_BASE_URL || 'http://localhost:3000/api')
+	? (import.meta.env.VITE_API_BASE_URL || '/api')
 	: (import.meta.env.VITE_INTERNAL_API_URL || 'http://backend:3000/api');
 
 interface ApiResponse<T> {