-// Copyright (C) 2007-2015 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
#endif
#include <Standard_Failure.hxx>
+#include <Expr_NamedUnknown.hxx>
#ifdef NO_CAS_CATCH
#include <Standard_ErrorHandler.hxx>