--- itkLandmarkBasedTransformInitializer.h
+++ itkLandmarkBasedTransformInitializer.h
@@ -130,7 +130,7 @@
   typedef typename
           LandmarkPointContainer::const_iterator                  PointsContainerConstIterator;
   typedef typename TransformType::ParametersType                  ParametersType;
-  typedef typename ParametersType::ValueType                      ParameterValueType;
+  typedef typename TransformType::ScalarType                      ParameterValueType;