//itk include
#include "itkLightObject.h"
-#if ITK_VERSION_MAJOR >= 4
-# if ITK_VERSION_MINOR < 6
-# include "itkTransformToDisplacementFieldSource.h"
-# else
-# include "itkTransformToDisplacementFieldFilter.h"
-# endif
+#if (ITK_VERSION_MAJOR == 4) && (ITK_VERSION_MINOR < 6)
+# include "itkTransformToDisplacementFieldSource.h"
+#else
+# include "itkTransformToDisplacementFieldFilter.h"
#endif
#include "itkAffineTransform.h"