diff --git a/Modules/Segmentation/files.cmake b/Modules/Segmentation/files.cmake
index 1d691aaba1..fe671afe8a 100644
--- a/Modules/Segmentation/files.cmake
+++ b/Modules/Segmentation/files.cmake
@@ -1,56 +1,56 @@
 set(CPP_FILES
 Algorithms/mitkCalculateSegmentationVolume.cpp
 Algorithms/mitkComputeContourSetNormalsFilter.cpp
 Algorithms/mitkContourSetToPointSetFilter.cpp
 Algorithms/mitkContourUtils.cpp
 Algorithms/mitkCorrectorAlgorithm.cpp
 Algorithms/mitkCreateDistanceImageFromSurfaceFilter.cpp
 Algorithms/mitkDiffImageApplier.cpp
 Algorithms/mitkImageToContourFilter.cpp
 Algorithms/mitkManualSegmentationToSurfaceFilter.cpp
 Algorithms/mitkOverwriteDirectedPlaneImageFilter.cpp
 Algorithms/mitkOverwriteSliceImageFilter.cpp
 Algorithms/mitkReduceContourSetFilter.cpp
 Algorithms/mitkSegmentationObjectFactory.cpp
 Algorithms/mitkSegmentationSink.cpp
 Algorithms/mitkShapeBasedInterpolationAlgorithm.cpp
 Algorithms/mitkShowSegmentationAsSmoothedSurface.cpp
 Algorithms/mitkShowSegmentationAsSurface.cpp
 Algorithms/mitkVtkImageOverwrite.cpp
-Algorithms/DiffSliceOperation.cpp
-Algorithms/DiffSliceOperationApplier.cpp
+Algorithms/mitkDiffSliceOperation.cpp
+Algorithms/mitkDiffSliceOperationApplier.cpp
 Controllers/mitkSegmentationInterpolationController.cpp
 Controllers/mitkSurfaceInterpolationController.cpp
 # DataManagement/mitkApplyDiffImageOperation.cpp
 DataManagement/mitkContour.cpp
 DataManagement/mitkContourSet.cpp
 DataManagement/mitkExtrudedContour.cpp
 Interactions/mitkAddContourTool.cpp
 Interactions/mitkAutoCropTool.cpp
 Interactions/mitkAutoSegmentationTool.cpp
 Interactions/mitkBinaryThresholdTool.cpp
 Interactions/mitkBinaryThresholdULTool.cpp
 Interactions/mitkCalculateGrayValueStatisticsTool.cpp
 Interactions/mitkCalculateVolumetryTool.cpp
 Interactions/mitkContourInteractor.cpp
 Interactions/mitkContourTool.cpp
 Interactions/mitkCorrectorTool2D.cpp
 Interactions/mitkCreateSurfaceTool.cpp
 Interactions/mitkDrawPaintbrushTool.cpp
 Interactions/mitkErasePaintbrushTool.cpp
 Interactions/mitkEraseRegionTool.cpp
 Interactions/mitkExtrudedContourInteractor.cpp
 Interactions/mitkFeedbackContourTool.cpp
 Interactions/mitkFillRegionTool.cpp
 Interactions/mitkPaintbrushTool.cpp
 Interactions/mitkRegionGrow3DTool.cpp
 Interactions/mitkRegionGrowingTool.cpp
 Interactions/mitkSegmentationsProcessingTool.cpp
 Interactions/mitkSetRegionTool.cpp
 Interactions/mitkSegTool2D.cpp
 Interactions/mitkSubtractContourTool.cpp
 Rendering/mitkContourMapper2D.cpp
 Rendering/mitkContourSetMapper2D.cpp
 Rendering/mitkContourSetVtkMapper3D.cpp
 Rendering/mitkContourVtkMapper3D.cpp
 )