diff --git a/Modules/RTUI/files.cmake b/Modules/RTUI/files.cmake
index 4d0a33d0aa..d49a968f4c 100644
--- a/Modules/RTUI/files.cmake
+++ b/Modules/RTUI/files.cmake
@@ -1,28 +1,27 @@
 set(CPP_FILES
   Qmitk/QmitkFreeIsoDoseLevelWidget.cpp
   Qmitk/QmitkIsoDoseLevelSetModel.cpp
   Qmitk/QmitkDoseColorDelegate.cpp
   Qmitk/QmitkDoseValueDelegate.cpp
   Qmitk/QmitkDoseVisualStyleDelegate.cpp
-  Helper/mitkDoseNodeSyncHelper.cpp
   Helper/mitkRTUIConstants.cpp
   Helper/mitkIsoLevelsGenerator.cpp
 )
 
 set(UI_FILES
   Qmitk/QmitkFreeIsoDoseLevelWidget.ui
 )
 
 set(MOC_H_FILES
   Qmitk/QmitkFreeIsoDoseLevelWidget.h
   Qmitk/QmitkIsoDoseLevelSetModel.h
   Qmitk/QmitkDoseColorDelegate.h
   Qmitk/QmitkDoseValueDelegate.h
   Qmitk/QmitkDoseVisualStyleDelegate.h
 )
 
 set(QRC_FILES
   resources/RTUI.qrc
 )