diff --git a/server/src/lib/unifiController.js b/server/src/lib/unifiController.js
index 82bccee..97b3d48 100644
--- a/server/src/lib/unifiController.js
+++ b/server/src/lib/unifiController.js
@@ -180,7 +180,7 @@ export async function getOnlineWifiDevices() {
 
     const hydratedOnlineDevices = onlineDevices[0].map(client => ({
       user: client['1x_identity'] || null,
-      oui: ouiFinder(client.oui),
+      oui: ouiFinder(client.mac),
       mac: client.mac,
       hostname: client.hostname,
       firstSeen: new Date(client.first_seen * 1000),