diff --git a/auth/auth.js b/auth/auth.js
index c4a279f..266e09d 100755
--- a/auth/auth.js
+++ b/auth/auth.js
@@ -51,7 +51,10 @@ app.post('/api/event', (req,res)=>{
 
 // Optional für Nginx auth_request
 app.get("/internal/auth", (req,res)=>{
-    if(req.cookies.SESSIONID) return res.sendStatus(200);
+    const sid = req.cookies.SESSIONID;
+    if (sid && SESSIONS[sid]) {
+        return res.sendStatus(200);
+    }
     return res.sendStatus(401);
 });