diff --git a/lib/dms.js b/lib/dms.js
index 0883bfcb..dd6685e2 100644
--- a/lib/dms.js
+++ b/lib/dms.js
@@ -9,7 +9,7 @@ const logger = require('../utils/logger')
 class DmsModel {
   constructor(config) {
     this.config = config
-    this.api = config.get('API_URL')
+    this.api = config.get('INTERNAL_API_URL') || config.get('API_URL')
   }
 
   async getJsonResponse(params, action) {