diff --git a/EXE_GdbCreateSurf.cpp b/EXE_GdbCreateSurf.cpp
index 0120a1b..e4b27ee 100644
--- a/EXE_GdbCreateSurf.cpp
+++ b/EXE_GdbCreateSurf.cpp
@@ -2125,7 +2125,6 @@ ExeCreateSurfBzByRegionExtrusion( int nParentId, const INTVECTOR& vCrvIds, const
    double dAndTolStdDeg = 15 ;
 
    // riordino le curve in modo che la prima sia quella esterna e tutte le altre dopo
-   POLYLINEVECTOR vPLOrd ;
    POLYLINEVECTOR vPL ;
    for ( int i = 0 ; i < int( vCrvP.size()) ; ++ i) {
       vPL.emplace_back() ;
@@ -2135,7 +2134,7 @@ ExeCreateSurfBzByRegionExtrusion( int nParentId, const INTVECTOR& vCrvIds, const
    Vector3d vtN ;
    INTMATRIX vnPLIndMat ;
    BOOLVECTOR vbInvert ;
-   if ( ! CalcRegionPolyLines( vPL, vPLOrd, vtN, vnPLIndMat, vbInvert))
+   if ( ! CalcRegionPolyLines( vPL, vtN, vnPLIndMat, vbInvert))
       return nFirstId ;
 
    // creo una copia delle curve, orientate giuste