diff --git a/server/src/api/devices/cards/cardApi.ts b/server/src/api/devices/cards/cardApi.ts
index 6ed977e1..ebb5c608 100644
--- a/server/src/api/devices/cards/cardApi.ts
+++ b/server/src/api/devices/cards/cardApi.ts
@@ -28,10 +28,11 @@ export function registerEndpoints(app: express.Application) {
     if (typeof universityID !== "string") { return res.status(400).json({ error: "universityID was not a string" }).send(); }
     if (typeof cardTag !== "string") { return res.status(400).json({ error: "cardTag was not a string" }).send(); }
 
-    const username = await Atrium.getRitEmailByUID(CurrencySource.Store, universityID);
-    if (username === undefined) {
+    const email = await Atrium.getRitEmailByUID(CurrencySource.Store, universityID);
+    if (email === undefined) {
       return res.status(404).json({ error: "No user found with the given universityID" }).send();
     }
+    const username = email.split("@")[0];
 
     const user = await UserRepo.getUserByRitUsername(username);
     if (user === undefined) {