diff --git a/src/pages/api/auth/generateAccessToken.ts b/src/pages/api/auth/generateAccessToken.ts
index 9ffaa36..f5580e7 100644
--- a/src/pages/api/auth/generateAccessToken.ts
+++ b/src/pages/api/auth/generateAccessToken.ts
@@ -44,7 +44,7 @@ export const POST: APIRoute = async({ request }) => {
         const username = Buffer.from(data.username).toString('base64url');
         const random = randomBytes(16).toString("base64url");
         const randomHashed = createHash("sha256").update(random).digest("hex");
-        const expiresIn = data.duration ?? 86400000
+        const expiresIn = data.duration * 1000 ?? 86400000
 
         const tokenString = `A.${timestamp}.${username}.${random}`;