#include <GeomToStep_MakeElementarySurface.ixx>
#include <StdFail_NotDone.hxx>
#include <StepGeom_ElementarySurface.hxx>
+#include <StepGeom_CylindricalSurface.hxx>
+#include <StepGeom_ConicalSurface.hxx>
+#include <StepGeom_SphericalSurface.hxx>
+#include <StepGeom_ToroidalSurface.hxx>
+#include <StepGeom_Plane.hxx>
#include <GeomToStep_MakeElementarySurface.hxx>
#include <Geom_CylindricalSurface.hxx>
#include <Geom_ConicalSurface.hxx>