diff --git a/CalcPocketing.cpp b/CalcPocketing.cpp
index 02f7c53..d206308 100644
--- a/CalcPocketing.cpp
+++ b/CalcPocketing.cpp
@@ -9108,6 +9108,9 @@ CalcZigZagInfill( const ISurfFlatRegion* pSfr, double dStep, bool bSmooth, bool
    PocketParams myParams ;
    myParams.bSmooth = false ;
    myParams.dRad = 0.5 * dStep ;
+   myParams.bCalcFeed = false ;
+   myParams.dSideStep = dStep ;
+   myParams.bInvert = false ;
 
   // vettore con i percorsi a ZigZag
    ICRVCOMPOPOVECTOR vpCrvs ;