diff --git a/Code/Projections/otbGenericRSTransform.txx b/Code/Projections/otbGenericRSTransform.txx
index 54bb38b6db42fd1ddb2e2e8652233263de1c4cf0..7eb45ea7eccfeee8b9367d6f823cfaff8fa7e2f4 100644
--- a/Code/Projections/otbGenericRSTransform.txx
+++ b/Code/Projections/otbGenericRSTransform.txx
@@ -35,8 +35,8 @@ GenericRSTransform<TScalarType, NInputDimensions, NOutputDimensions>
 ::GenericRSTransform() : Superclass(SpaceDimension, ParametersDimension),
                          m_DEMDirectory(""), m_GeoidFile(""),
                          m_AverageElevation(-32768.0),
-                         m_OptimizeInputTransform(true),
-                         m_OptimizeOutputTransform(true),
+                         m_OptimizeInputTransform(false),
+                         m_OptimizeOutputTransform(false), 
                          m_InputTiePoints(),
                          m_OutputTiePoints()