diff --git a/EXeExecutor.h b/EXeExecutor.h
index e1ab1a3..24d1a8e 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -514,6 +514,7 @@ EXE_EXPORT bool ExeChangeClosedCurveStart( int nId, double dU) ;
 EXE_EXPORT bool ExeChangeClosedCurveStartPoint( int nId, const Point3d& ptP, int nRefType) ;
 EXE_EXPORT bool ExeModifyCurveStartPoint( int nId, const Point3d& ptP, int nRefType) ;
 EXE_EXPORT bool ExeModifyCurveEndPoint( int nId, const Point3d& ptP, int nRefType) ;
+EXE_EXPORT bool ExeSpiralizeCurve( int nId, double dDelta) ;
 EXE_EXPORT bool ExeModifyCurveExtrusion( const INTVECTOR& vIds, const Vector3d& vtExtr, int nRefType) ;
 EXE_EXPORT bool ExeModifyCurveThickness( const INTVECTOR& vIds, double dThick) ;
 EXE_EXPORT bool ExeTrimCurveStartAtLen( int nId, double dLen) ;