diff --git a/modules/angular2/src/core/annotations_impl/annotations.ts b/modules/angular2/src/core/annotations_impl/annotations.ts
index 90e0a675f6..7e152cd67c 100644
--- a/modules/angular2/src/core/annotations_impl/annotations.ts
+++ b/modules/angular2/src/core/annotations_impl/annotations.ts
@@ -979,10 +979,10 @@ export class Component extends Directive {
     selector?: string,
     properties?: List<string>,
     events?: List<string>,
-    hostListeners?: Map<string, string>,
-    hostProperties?: any,
-    hostAttributes?: any,
-    hostActions?: any,
+    hostListeners?: StringMap<string, string>,
+    hostProperties?: StringMap<string, string>,
+    hostAttributes?: StringMap<string, string>,
+    hostActions?: StringMap<string, string>,
     appInjector?: List<any>,
     lifecycle?: List<LifecycleEvent>,
     hostInjector?: List<any>,