diff --git a/Modules/Core/include/mitkAnnotationService.h b/Modules/Core/include/mitkAnnotationService.h
index ab73850f77..ea81fbf602 100644
--- a/Modules/Core/include/mitkAnnotationService.h
+++ b/Modules/Core/include/mitkAnnotationService.h
@@ -1,48 +1,49 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 #ifndef mitkAnnotationService_h
 #define mitkAnnotationService_h
 
 #include <MitkCoreExports.h>
 #include <memory>
 #include <vector>
 
 namespace mitk
 {
   class AbstractAnnotationRenderer;
 
   class MITKCORE_EXPORT AnnotationService
   {
   public:
     typedef std::vector<std::unique_ptr<AbstractAnnotationRenderer>> AnnotationRendererServices;
     AnnotationService();
     ~AnnotationService();
 
     static AbstractAnnotationRenderer *GetAnnotationRenderer(const std::string &arTypeID,
                                                              const std::string &rendererID);
 
     static void RegisterAnnotationRenderer(AbstractAnnotationRenderer *annotationRenderer);
 
     static void UpdateAnnotationRenderer(const std::string &rendererID);
 
   private:
+    static std::vector<AbstractAnnotationRenderer *> GetAnnotationRenderer(const std::string &rendererID);
     AnnotationService(const AnnotationService &);
     AnnotationService &operator=(const AnnotationService &);
   };
 }
 
 #endif
diff --git a/Modules/Core/src/Rendering/mitkAnnotationService.cpp b/Modules/Core/src/Rendering/mitkAnnotationService.cpp
index ea1d32baf4..52337c4de6 100644
--- a/Modules/Core/src/Rendering/mitkAnnotationService.cpp
+++ b/Modules/Core/src/Rendering/mitkAnnotationService.cpp
@@ -1,77 +1,85 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 #include "mitkAnnotationService.h"
 #include <mitkAbstractAnnotationRenderer.h>
 
 namespace mitk
 {
   AnnotationService::AnnotationService() {}
   AnnotationService::~AnnotationService() {}
   AbstractAnnotationRenderer *AnnotationService::GetAnnotationRenderer(const std::string &arTypeID,
                                                                        const std::string &rendererID)
   {
     // get the context
     us::ModuleContext *context = us::GetModuleContext();
 
     // specify a filter that defines the requested type
     std::string filter = "(&(" + AbstractAnnotationRenderer::US_PROPKEY_ID + "=" + arTypeID + ")(" +
                          AbstractAnnotationRenderer::US_PROPKEY_RENDERER_ID + "=" + rendererID + "))";
     // find the fitting service
     std::vector<us::ServiceReferenceU> serviceReferences =
       context->GetServiceReferences(AbstractAnnotationRenderer::US_INTERFACE_NAME, filter);
 
     // check if a service reference was found. It is also possible that several
     // services were found. This is not checked here, just the first one is taken.
     AbstractAnnotationRenderer *ar = nullptr;
     if (serviceReferences.size())
     {
       ar = context->GetService<AbstractAnnotationRenderer>(serviceReferences.front());
     }
     // no service reference was found or found service reference has no valid source
     return ar;
   }
 
   void AnnotationService::RegisterAnnotationRenderer(AbstractAnnotationRenderer *annotationRenderer)
   {
     static AnnotationRendererServices AnnotationRendererServices;
     // Define ServiceProps
     us::ServiceProperties props;
     props[AbstractAnnotationRenderer::US_PROPKEY_RENDERER_ID] = annotationRenderer->GetRendererID();
     props[AbstractAnnotationRenderer::US_PROPKEY_ID] = annotationRenderer->GetID();
 
     us::GetModuleContext()->RegisterService(annotationRenderer, props);
     AnnotationRendererServices.push_back(std::unique_ptr<AbstractAnnotationRenderer>(annotationRenderer));
   }
 
   void AnnotationService::UpdateAnnotationRenderer(const std::string &rendererID)
-  { // get the context
+  {
+    for (AbstractAnnotationRenderer *annotationRenderer : GetAnnotationRenderer(rendererID))
+    {
+      annotationRenderer->Update();
+    }
+  }
+
+  std::vector<AbstractAnnotationRenderer *> AnnotationService::GetAnnotationRenderer(const std::string &rendererID)
+  {
     us::ModuleContext *context = us::GetModuleContext();
 
     // specify a filter that defines the requested type
     std::string filter = "(&(" + AbstractAnnotationRenderer::US_PROPKEY_ID + "=*)(" +
                          AbstractAnnotationRenderer::US_PROPKEY_RENDERER_ID + "=" + rendererID + "))";
     // find the fitting service
     std::vector<us::ServiceReferenceU> serviceReferences =
       context->GetServiceReferences(AbstractAnnotationRenderer::US_INTERFACE_NAME, filter);
-
+    std::vector<AbstractAnnotationRenderer *> arList;
     for (us::ServiceReferenceU service : serviceReferences)
     {
-      AbstractAnnotationRenderer *annotationRenderer = context->GetService<AbstractAnnotationRenderer>(service);
-      annotationRenderer->Update();
+      arList.push_back(context->GetService<AbstractAnnotationRenderer>(service));
     }
+    return arList;
   }
 }