diff --git a/lib/abf_worker/observer_helper.rb b/lib/abf_worker/base_observer.rb
similarity index 80%
rename from lib/abf_worker/observer_helper.rb
rename to lib/abf_worker/base_observer.rb
index 994586a34..da8e38bf7 100644
--- a/lib/abf_worker/observer_helper.rb
+++ b/lib/abf_worker/base_observer.rb
@@ -1,12 +1,12 @@
 module AbfWorker
-  module ObserverHelper
+  class BaseObserver
     BUILD_COMPLETED = 0
     BUILD_FAILED    = 1
     BUILD_PENDING   = 2
     BUILD_STARTED   = 3
     BUILD_CANCELED  = 4
 
-    def update_results(subject, options)
+    def self.update_results(subject, options)
       results = (subject.results || [])+ options['results']
       subject.results = results.sort_by{ |r| r['file_name'] }
       subject.save!
diff --git a/lib/abf_worker/iso_worker_observer.rb b/lib/abf_worker/iso_worker_observer.rb
index 93eca869a..46eb87dcb 100644
--- a/lib/abf_worker/iso_worker_observer.rb
+++ b/lib/abf_worker/iso_worker_observer.rb
@@ -1,6 +1,5 @@
 module AbfWorker
-  class IsoWorkerObserver
-    extend AbfWorker::ObserverHelper
+  class IsoWorkerObserver < AbfWorker::BaseObserver
     @queue = :iso_worker_observer
 
     def self.perform(options)
diff --git a/lib/abf_worker/publish_build_list_container_observer.rb b/lib/abf_worker/publish_build_list_container_observer.rb
index cbc6d509e..d6eef87a2 100644
--- a/lib/abf_worker/publish_build_list_container_observer.rb
+++ b/lib/abf_worker/publish_build_list_container_observer.rb
@@ -1,6 +1,5 @@
 module AbfWorker
-  class PublishBuildListContainerObserver
-    extend AbfWorker::ObserverHelper
+  class PublishBuildListContainerObserver < AbfWorker::BaseObserver
     @queue = :publish_build_list_container_observer
 
     def self.perform(options)
diff --git a/lib/abf_worker/rpm_worker_observer.rb b/lib/abf_worker/rpm_worker_observer.rb
index b468d676c..5635ec733 100644
--- a/lib/abf_worker/rpm_worker_observer.rb
+++ b/lib/abf_worker/rpm_worker_observer.rb
@@ -1,6 +1,5 @@
 module AbfWorker
-  class RpmWorkerObserver
-    extend AbfWorker::ObserverHelper
+  class RpmWorkerObserver < AbfWorker::BaseObserver
     @queue = :rpm_worker_observer
 
     def self.perform(options)