diff --git a/services/clsi/config/settings.defaults.js b/services/clsi/config/settings.defaults.js
index e32815ae44..0f4111dc62 100644
--- a/services/clsi/config/settings.defaults.js
+++ b/services/clsi/config/settings.defaults.js
@@ -1,11 +1,10 @@
 const Path = require('node:path')
-const os = require('node:os')
 const http = require('node:http')
 const https = require('node:https')
 
 http.globalAgent.keepAlive = false
 https.globalAgent.keepAlive = false
-const isPreEmptible = os.hostname().includes('pre-emp')
+const isPreEmptible = process.env.PREEMPTIBLE === 'TRUE'
 
 module.exports = {
   compileSizeLimit: process.env.COMPILE_SIZE_LIMIT || '7mb',