// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
-#ifndef _OpenGl_GlCore20_Header
-#define _OpenGl_GlCore20_Header
+#ifndef OpenGl_GlCore20_HeaderFile
+#define OpenGl_GlCore20_HeaderFile
#include <OpenGl_GlCore15.hxx>