diff --git a/tools/system-config-tmpl.js b/tools/system-config-tmpl.js
index cf791acaaa68..01788aa15709 100644
--- a/tools/system-config-tmpl.js
+++ b/tools/system-config-tmpl.js
@@ -31,6 +31,7 @@ var nodeModulesPath = '$NODE_MODULES_BASE_PATH';
 var pathMapping = {
   'tslib': 'node:tslib/tslib.js',
   'moment': 'node:moment/min/moment-with-locales.min.js',
+  'moment/locale': 'node:moment/locale',
   'kagekiri': 'node:kagekiri/dist/kagekiri.umd.min.js',
 
   'rxjs': 'node:rxjs/bundles/rxjs.umd.min.js',