diff --git a/lib/request.js b/lib/request.js
index 0db3ca4f..1395dd18 100644
--- a/lib/request.js
+++ b/lib/request.js
@@ -1,7 +1,7 @@
 'use strict'
 
 const DEV = process.env.NODE_ENV === 'dev'
-const DEBUG = /\bhafas-client\b/.test(process.env.DEBUG || '')
+const DEBUG = /(^|,)hafas-client(,|$)/.test(process.env.DEBUG || '')
 
 const ProxyAgent = require('https-proxy-agent')
 const {isIP} = require('net')