diff --git a/lib/region_config.js b/lib/region_config.js
index b4c2401a28..b0fbb3fee9 100644
--- a/lib/region_config.js
+++ b/lib/region_config.js
@@ -19,6 +19,7 @@ function derivedKeys(service) {
     [region, '*'],
     [regionPrefix, '*'],
     ['*', endpointPrefix],
+    [region, 'internal-*'],
     ['*', '*']
   ].map(function(item) {
     return item[0] && item[1] ? item.join('/') : null;