diff --git a/include/dcmqi/Itk2DicomConverter.h b/include/dcmqi/Itk2DicomConverter.h
index d89b9d2d..0d671744 100644
--- a/include/dcmqi/Itk2DicomConverter.h
+++ b/include/dcmqi/Itk2DicomConverter.h
@@ -63,7 +63,7 @@ namespace dcmqi {
      * @return A pointer to the resulting DICOM Segmentation object.
      */
     static DcmDataset* itkimage2dcmSegmentation(vector<DcmDataset*> dcmDatasets,
-                          vector<ShortImageType::Pointer> segmentations,
+                          vector<ShortImageType::ConstPointer> segmentations,
                           const string &metaData,
                           bool skipEmptySlices=true,
                           bool useLabelIDAsSegmentNumber=false,
diff --git a/libsrc/Itk2DicomConverter.cpp b/libsrc/Itk2DicomConverter.cpp
index 694cc9e4..1151a77b 100644
--- a/libsrc/Itk2DicomConverter.cpp
+++ b/libsrc/Itk2DicomConverter.cpp
@@ -26,7 +26,7 @@ namespace dcmqi {
   // -------------------------------------------------------------------------------------
 
   DcmDataset* Itk2DicomConverter::itkimage2dcmSegmentation(vector<DcmDataset*> dcmDatasets,
-                                                          vector<ShortImageType::Pointer> segmentations,
+                                                          vector<ShortImageType::ConstPointer> segmentations,
                                                           const string &metaData,
                                                           bool skipEmptySlices,
                                                           bool useLabelIDAsSegmentNumber,