diff --git a/packages/router/src/router_config_loader.ts b/packages/router/src/router_config_loader.ts
index 641ecd856a7e4..6f5d981cf7a88 100644
--- a/packages/router/src/router_config_loader.ts
+++ b/packages/router/src/router_config_loader.ts
@@ -7,7 +7,6 @@
  */
 
 import {Compiler, InjectionToken, Injector, NgModuleFactory, NgModuleFactoryLoader} from '@angular/core';
-// TODO(i): switch to fromPromise once it's expored in rxjs
 import {Observable, from, of } from 'rxjs';
 import {map, mergeMap} from 'rxjs/operators';
 import {LoadChildren, LoadedRouterConfig, Route, standardizeConfig} from './config';