diff --git a/service/src/services/event-subjects/callout.published.event.subject.ts b/service/src/services/event-subjects/callout.published.event.subject.ts
index f52e488..c56c72e 100644
--- a/service/src/services/event-subjects/callout.published.event.subject.ts
+++ b/service/src/services/event-subjects/callout.published.event.subject.ts
@@ -6,9 +6,9 @@ import { BaseEventSubject } from './base.event.subject';
 @Injectable()
 export class CalloutPublishedEventSubject extends BaseEventSubject<CollaborationCalloutPublishedEventPayload> {
   constructor(
-    private readonly inAppBuilder: CalloutPublishedInAppNotificationBuilder
+    private readonly calloutPublishedBuilder: CalloutPublishedInAppNotificationBuilder
   ) {
     super();
-    this.registerBuilders([this.inAppBuilder]);
+    this.registerBuilders([this.calloutPublishedBuilder]);
   }
 }
diff --git a/service/src/services/event-subjects/community.new.contributor.event.subject.ts b/service/src/services/event-subjects/community.new.contributor.event.subject.ts
index 7946286..7a00c10 100644
--- a/service/src/services/event-subjects/community.new.contributor.event.subject.ts
+++ b/service/src/services/event-subjects/community.new.contributor.event.subject.ts
@@ -6,9 +6,9 @@ import { BaseEventSubject } from './base.event.subject';
 @Injectable()
 export class CommunityNewContributorEventSubject extends BaseEventSubject<CommunityNewMemberPayload> {
   constructor(
-    private readonly inAppBuilder: CommunityNewContributorInAppNotificationBuilder
+    private readonly newContributorBuilder: CommunityNewContributorInAppNotificationBuilder
   ) {
     super();
-    this.registerBuilders([this.inAppBuilder]);
+    this.registerBuilders([this.newContributorBuilder]);
   }
 }
diff --git a/service/src/services/event-subjects/contributor.mentioned.event.subject.ts b/service/src/services/event-subjects/contributor.mentioned.event.subject.ts
index 040ab08..fd691e6 100644
--- a/service/src/services/event-subjects/contributor.mentioned.event.subject.ts
+++ b/service/src/services/event-subjects/contributor.mentioned.event.subject.ts
@@ -1,14 +1,14 @@
 import { Injectable } from '@nestjs/common';
 import { CommunicationUserMentionEventPayload } from '@alkemio/notifications-lib';
-import { CalloutPublishedInAppNotificationBuilder } from '../builders/in-app';
+import { ContributorMentionedInAppNotificationBuilder } from '../builders/in-app';
 import { BaseEventSubject } from './base.event.subject';
 
 @Injectable()
 export class ContributorMentionedEventSubject extends BaseEventSubject<CommunicationUserMentionEventPayload> {
   constructor(
-    private readonly inAppBuilder: CalloutPublishedInAppNotificationBuilder
+    private readonly contributorMentionedBuilder: ContributorMentionedInAppNotificationBuilder
   ) {
     super();
-    this.registerBuilders([this.inAppBuilder]);
+    this.registerBuilders([this.contributorMentionedBuilder]);
   }
 }