diff --git a/MachineCalc.cpp b/MachineCalc.cpp
index 8a79d89..305e9ea 100644
--- a/MachineCalc.cpp
+++ b/MachineCalc.cpp
@@ -1747,6 +1747,9 @@ Machine::VerifyProtectedAreas( double dX, double dY, double dZ, const DBLVECTOR&
   // se non esiste funzione gestione aree protette, non devo fare alcunchè
    if ( ! LuaExistsFunction( ON_VERIFY_PROTECTEDAREAS))
       return true ;
+  // se non è collegamento e aree protette solo per questi, non devo fare alcunchè
+   if ( nLinkType == 0  &&  m_nNewLinkMgr == 1)
+      return true ;
   // default
    bool bOk = true ;
    int nErr = 99 ;
diff --git a/Operation.cpp b/Operation.cpp
index 6e7f7b5..33b2b5e 100644
--- a/Operation.cpp
+++ b/Operation.cpp
@@ -2960,7 +2960,7 @@ Operation::ManageProtectedAreas( const DBLVECTOR& vAxStart, const DBLVECTOR& vAx
    bool bNewLink = m_pMchMgr->GetCurrMachine()->GetNewLinkMgr() ;
 
   // codifica tipo di collegamento
-   int nLinkType = 0 + ( pPrevOp == nullptr ? 0 : 2) + ( pNextOp == nullptr ? 0 : 1) ;
+   int nLinkType = ( pPrevOp == nullptr ? 0 : 2) + ( pNextOp == nullptr ? 0 : 1) ;
 
   // Verifico se il collegamento le attraversa
    Point3d ptSta( vAxStart[0], vAxStart[1], vAxStart[2]) ;
diff --git a/SurfFinishing.cpp b/SurfFinishing.cpp
index 77ef9c9..d79a4fb 100644
--- a/SurfFinishing.cpp
+++ b/SurfFinishing.cpp
@@ -3394,7 +3394,7 @@ SurfFinishing::ChooseFinishingForOptimal( const ISurfFlatRegion* pSfr, int nChun
          if ( AreSameOrOppositeVectorApprox( vtTanMaxLine, vtX)) {
             bSpiral = false ; // ZigZag
             X_AX.GetAngle( vtX, dSideAng) ;
-            abs( dSideAng) ;
+            dSideAng = abs( dSideAng) ;
          }
       }
    }