diff --git a/src/server.ts b/src/server.ts
index be88a56..0e9220e 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -1,7 +1,7 @@
 import { instrument } from 'succinct-async'
 import express, { Request, Response, NextFunction } from 'express'
 import rateLimit from 'express-rate-limit'
-import { appSigner, BRAND_NAME, BRAND_ACCENT, BRAND_LOGO, EVENT_VIEWER_URL, CORS_ORIGIN } from './env.js'
+import { appSigner, BASE_URL, BRAND_NAME, BRAND_ACCENT, BRAND_LOGO, EVENT_VIEWER_URL, CORS_ORIGIN } from './env.js'
 import { render } from './templates.js'
 import { confirmSubscriptionAction, unsubscribeAction, registerSubscription, ActionError } from './actions.js'
 import { getSubscriptionById, insertEvent, getSubscriptionByKey, getSubscriptionByPubkey } from './database.js'
@@ -172,7 +172,7 @@ addRoute('get', '/subscription/email', async (req: Request, res: Response) => {
     return res.status(404).json({ error: 'Subscription not found' })
   }
 
-  const callback = `${process.env.BASE_URL}/notify/${sub.id}`
+  const callback = `${BASE_URL}/notify/${sub.id}`
 
   res.json({
     key: sub.key,
@@ -214,7 +214,7 @@ addRoute('put', '/subscription/email', async (req: Request, res: Response) => {
     // Look up the actual subscription key from the DB
     const sub = await getSubscriptionByPubkey(pubkey)
     if (sub) {
-      const callback = `${process.env.BASE_URL}/notify/${sub.id}`
+      const callback = `${BASE_URL}/notify/${sub.id}`
       res.json({ key: sub.key, callback })
     } else {
       console.error('Failed to register subscription:', error)