diff --git a/lib/config/environment.js b/lib/config/environment.js
index 75381ff..c108a6f 100644
--- a/lib/config/environment.js
+++ b/lib/config/environment.js
@@ -6,7 +6,7 @@ module.exports = {
   domain: process.env.HMD_DOMAIN,
   urlpath: process.env.HMD_URL_PATH,
   port: process.env.HMD_PORT,
-  urladdport: process.env.HMD_URL_ADDPORT,
+  urladdport: toBooleanConfig(process.env.HMD_URL_ADDPORT),
   usessl: toBooleanConfig(process.env.HMD_USESSL),
   protocolusessl: toBooleanConfig(process.env.HMD_PROTOCOL_USESSL),
   alloworigin: process.env.HMD_ALLOW_ORIGIN ? process.env.HMD_ALLOW_ORIGIN.split(',') : undefined,