diff --git a/api/routes/qr.js b/api/routes/qr.js
index 149a87c..f936d7b 100644
--- a/api/routes/qr.js
+++ b/api/routes/qr.js
@@ -59,7 +59,7 @@ router.post('/generate', verifyToken, async (req, res) => {
             }
 
             // In production, this would use the real domain (e.g. https://ck-qr.com/l/)
-            finalQrContent = `${process.env.BASE_URL || 'http://localhost:4001'}/l/${shortUrlId}`;
+            finalQrContent = `${process.env.FRONTEND_URL || 'http://localhost:4000'}/l/${shortUrlId}`;
         }
 
         const result = await pgPool.query(