diff --git a/lib/core/parser/static_parser.dart b/lib/core/parser/static_parser.dart
index e1e38ad79..636efdcde 100644
--- a/lib/core/parser/static_parser.dart
+++ b/lib/core/parser/static_parser.dart
@@ -1,5 +1,7 @@
 library angular.core.parser.static_parser;
 
+import 'dart:collection';
+
 import 'package:angular/cache/module.dart' show CacheRegister;
 import 'package:angular/core/annotation_src.dart' show Injectable;
 import 'package:angular/core/module_internal.dart' show FormatterMap;