diff --git a/public/app/plugins/datasource/mixed/datasource.ts b/public/app/plugins/datasource/mixed/datasource.ts
index bd0628fe210..b5cea9cc5a8 100644
--- a/public/app/plugins/datasource/mixed/datasource.ts
+++ b/public/app/plugins/datasource/mixed/datasource.ts
@@ -5,6 +5,7 @@ import _ from 'lodash';
 
 class MixedDatasource {
 
+  /** @ngInject */
   constructor(private $q, private datasourceSrv) {
   }