diff --git a/include/otbCacheLessLabelImageToVectorData.h b/include/otbCacheLessLabelImageToVectorData.h
index d8fc339ed965780ce08cf6746025dc39aacca5c2..469d27ff41553549dfec718131f626caab5e8bee 100644
--- a/include/otbCacheLessLabelImageToVectorData.h
+++ b/include/otbCacheLessLabelImageToVectorData.h
@@ -144,6 +144,8 @@ public:
 
   void GenerateInputRequestedRegion() {};
 
+  std::string GetFieldName() { return vectorizeFilter->GetFieldName(); }
+
 protected:
   CacheLessLabelImageToVectorData();
   ~CacheLessLabelImageToVectorData() ITK_OVERRIDE;