diff --git a/Applications/Projections/otbOrthoRectification.cxx b/Applications/Projections/otbOrthoRectification.cxx
index fc8ccbfa26c49992b4057ab9e447466c5a699be0..572ac62bb7e7a27fc25207c6deeff22d6989f4ed 100644
--- a/Applications/Projections/otbOrthoRectification.cxx
+++ b/Applications/Projections/otbOrthoRectification.cxx
@@ -176,7 +176,9 @@ private:
     MandatoryOff("map.epsg.code");
 
     // Deformation Field Spacing
-    AddParameter(ParameterType_Float, "gridspacing", "Generate a coarser deformation field with the given spacing");
+    AddParameter(ParameterType_Float, "gridspacing", "Deformation Field Spacing");
+    SetParameterInt("gridspacing", 4.);
+    SetParameterDescription("gridspacing", "Generate a coarser deformation field with the given spacing");
     MandatoryOff("gridspacing");
   }