diff --git a/src/app/article/comment/comments.component.spec.ts b/src/app/article/comment/comments.component.spec.ts
index fcf97a9..7076529 100644
--- a/src/app/article/comment/comments.component.spec.ts
+++ b/src/app/article/comment/comments.component.spec.ts
@@ -2,6 +2,7 @@ import {Provider, provide, Component} from 'ng-forward';
 import * as helpers from "../../../spec/helpers";
 
 import {CommentsComponent} from './comments.component';
+import {PostCommentComponent} from "./post-comment.component";
 
 const htmlTemplate: string = '<noosfero-comments [article]="ctrl.article"></noosfero-comments>';
 
@@ -42,8 +43,9 @@ describe("Components", () => {
 
         it("update comments list when receive an event", done => {
             helpers.createComponentFromClass(ContainerComponent).then(fixture => {
-              fixture.debugElement.getLocal("$rootScope").$emit("comment.received", {});
-                expect(fixture.debugElement.queryAll("noosfero-post-comment").length).toEqual(1);
+                fixture.debugElement.getLocal("$rootScope").$emit(PostCommentComponent.EVENT_COMMENT_RECEIVED, { id: 1 });
+                fixture.debugElement.getLocal("$rootScope").$apply();
+                expect(fixture.debugElement.queryAll("noosfero-comment").length).toEqual(3);
                 done();
             });
         });
diff --git a/src/app/article/comment/comments.component.ts b/src/app/article/comment/comments.component.ts
index 68f2e76..a488efd 100644
--- a/src/app/article/comment/comments.component.ts
+++ b/src/app/article/comment/comments.component.ts
@@ -15,7 +15,7 @@ export class CommentsComponent {
     @Input() article: noosfero.Article;
 
     constructor(private commentService: CommentService, private $rootScope: ng.IScope) {
-        $rootScope.$on("comment.received", (event: ng.IAngularEvent, comment: noosfero.Comment) => {
+        $rootScope.$on(PostCommentComponent.EVENT_COMMENT_RECEIVED, (event: ng.IAngularEvent, comment: noosfero.Comment) => {
             this.comments.push(comment);
         });
     }
diff --git a/src/app/article/comment/post-comment.component.ts b/src/app/article/comment/post-comment.component.ts
index c940fdb..f0a1012 100644
--- a/src/app/article/comment/post-comment.component.ts
+++ b/src/app/article/comment/post-comment.component.ts
@@ -9,6 +9,8 @@ import { NotificationService } from "../../shared/services/notification.service"
 @Inject(CommentService, NotificationService, "$rootScope")
 export class PostCommentComponent {
 
+    public static EVENT_COMMENT_RECEIVED = "comment.received";
+
     @Input() article: noosfero.Article;
     comment: noosfero.Comment;
 
@@ -21,7 +23,7 @@ export class PostCommentComponent {
             this.comment.reply_of_id = this.replyOf.id;
         }
         this.commentService.createInArticle(this.article, this.comment).then((result: noosfero.RestResult<noosfero.Comment>) => {
-            this.$rootScope.$emit("comment.received", result.data);
+            this.$rootScope.$emit(PostCommentComponent.EVENT_COMMENT_RECEIVED, result.data);
             this.notificationService.success({ title: "Good job!", message: "Comment saved!" });
         });
     }
--
libgit2 0.21.2