// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
-#include <AppBlend_Approx.ixx>
+
+#include <AppBlend_Approx.hxx>
+#include <Standard_DomainError.hxx>
+#include <Standard_OutOfRange.hxx>
+#include <StdFail_NotDone.hxx>
//=======================================================================
//function : AppBlend_Approx