diff --git a/Modules/Learning/Unsupervised/include/otbContingencyTable.h b/Modules/Learning/Unsupervised/include/otbContingencyTable.h
index bb3414f754bb70550dcdfe02382a1831628075b8..e1facdfa44d73f7107596e5fffe092538858b499 100644
--- a/Modules/Learning/Unsupervised/include/otbContingencyTable.h
+++ b/Modules/Learning/Unsupervised/include/otbContingencyTable.h
@@ -144,8 +144,8 @@ protected:
   }
 
 private:
-  ContingencyTable(const Self &); //purposely not implemented
-  void operator=(const Self &); //purposely not implemented
+  ContingencyTable(const Self &) ITK_DELETE_FUNCTION; //purposely not implemented
+  void operator=(const Self &) ITK_DELETE_FUNCTION; //purposely not implemented
 
   static size_t GetLabelsMaximumLength(const LabelList& labels, size_t maxWidth)
   {
diff --git a/Modules/Learning/Unsupervised/include/otbContingencyTableCalculator.h b/Modules/Learning/Unsupervised/include/otbContingencyTableCalculator.h
index b8d8d924af49ed402c70cad906854560f0f4e9db..328696c4e38d13f0341039856600a9c798759b07 100644
--- a/Modules/Learning/Unsupervised/include/otbContingencyTableCalculator.h
+++ b/Modules/Learning/Unsupervised/include/otbContingencyTableCalculator.h
@@ -87,8 +87,8 @@ protected:
   //void PrintSelf(std::ostream& os, itk::Indent indent) const ITK_OVERRIDE;
 
 private:
-  ContingencyTableCalculator(const Self &); //purposely not implemented
-  void operator=(const Self &); //purposely not implemented
+  ContingencyTableCalculator(const Self &) ITK_DELETE_FUNCTION; //purposely not implemented
+  void operator=(const Self &) ITK_DELETE_FUNCTION; //purposely not implemented
 
   MapOfClassesType m_LabelCount;
   unsigned long m_NumberOfRefClasses;
diff --git a/Modules/Learning/Unsupervised/include/otbSharkKMeansMachineLearningModel.h b/Modules/Learning/Unsupervised/include/otbSharkKMeansMachineLearningModel.h
index 3084b2503e8680fe36b60c0cf70b979bc7656cc9..22389a904b3076aee085bd85aa58fb75cb4a8ca0 100644
--- a/Modules/Learning/Unsupervised/include/otbSharkKMeansMachineLearningModel.h
+++ b/Modules/Learning/Unsupervised/include/otbSharkKMeansMachineLearningModel.h
@@ -142,8 +142,8 @@ protected:
   void PrintSelf(std::ostream &os, itk::Indent indent) const;
 
 private:
-  SharkKMeansMachineLearningModel(const Self &); //purposely not implemented
-  void operator=(const Self &); //purposely not implemented
+  SharkKMeansMachineLearningModel(const Self &) ITK_DELETE_FUNCTION; //purposely not implemented
+  void operator=(const Self &) ITK_DELETE_FUNCTION; //purposely not implemented
 
   // Parameters set by the user
   bool m_Normalized;
diff --git a/Modules/Learning/Unsupervised/include/otbSharkKMeansMachineLearningModelFactory.h b/Modules/Learning/Unsupervised/include/otbSharkKMeansMachineLearningModelFactory.h
index a072d5d71921f24cc483e0193d3f0d04a4ab41d2..5ef843d4d87c4f075e452f811ded1cec879eedeb 100644
--- a/Modules/Learning/Unsupervised/include/otbSharkKMeansMachineLearningModelFactory.h
+++ b/Modules/Learning/Unsupervised/include/otbSharkKMeansMachineLearningModelFactory.h
@@ -62,8 +62,8 @@ protected:
   virtual ~SharkKMeansMachineLearningModelFactory();
 
 private:
-  SharkKMeansMachineLearningModelFactory(const Self &); //purposely not implemented
-  void operator =(const Self&); //purposely not implemented
+  SharkKMeansMachineLearningModelFactory(const Self &) ITK_DELETE_FUNCTION; //purposely not implemented
+  void operator =(const Self&) ITK_DELETE_FUNCTION; //purposely not implemented
 
 };