diff --git a/SurfTriMeshBooleans.cpp b/SurfTriMeshBooleans.cpp
index b8a27ad..71620a5 100644
--- a/SurfTriMeshBooleans.cpp
+++ b/SurfTriMeshBooleans.cpp
@@ -394,20 +394,13 @@ SurfTriMesh::RetriangulationForBooleanOperation( CHAINMAP& LoopLines, TRIA3DVECT
       }
 
      // Fra le catene trovate separo le aperte dalle chiuse
-      int nDegenerateChainNum = 0 ;
       INTVECTOR vnDegVec ;
       CHAINVECTOR cvClosedChain ;
       CHAINVECTOR cvOpenChain ;
       for ( int nL = 0 ; nL < int( vChain.size()) ; ++ nL) {
-         bool bChainDegenerate = false ;
-         if ( vChain[nL].size() == 1  &&  AreSamePointApprox( vChain[nL][0].ptSt, vChain[nL][0].ptEn)) {
-            bChainDegenerate = true ;
-         }
-
-         if ( bChainDegenerate)
-            ++ nDegenerateChainNum ;
+         bool bChainDegenerate = ( vChain[nL].size() == 1  &&  AreSamePointApprox( vChain[nL][0].ptSt, vChain[nL][0].ptEn)) ;
          int nCurLoopLast = max( int( vChain[nL].size()) - 1, 0) ;
-         if ( ( ! bChainDegenerate)  &&  AreSamePointApprox( vChain[nL][0].ptSt, vChain[nL][nCurLoopLast].ptEn))
+         if ( ! bChainDegenerate  &&  AreSamePointApprox( vChain[nL][0].ptSt, vChain[nL][nCurLoopLast].ptEn))
             cvClosedChain.emplace_back( vChain[nL]) ;
          else {
             cvOpenChain.emplace_back( vChain[nL]) ;
@@ -446,7 +439,7 @@ SurfTriMesh::RetriangulationForBooleanOperation( CHAINMAP& LoopLines, TRIA3DVECT
       }
 
      // Gestione tagli piccoli
-      if ( int( cvOpenChain.size()) == 1  &&  int( cvOpenChain[0].size()) == 1  &&  int( cvClosedChain.size()) == 0) {
+      if ( cvOpenChain.size() == 1  &&  cvOpenChain[0].size() == 1  &&  cvClosedChain.empty()) {
          if ( AreSamePointEpsilon( cvOpenChain[0][0].ptSt, cvOpenChain[0][0].ptEn, EPS_SMALL)) {
             Plane3d plPlane ;
             plPlane.Set( cvOpenChain[0][0].ptSt, cvOpenChain[0][0].vtOuter) ;
@@ -511,7 +504,7 @@ SurfTriMesh::RetriangulationForBooleanOperation( CHAINMAP& LoopLines, TRIA3DVECT
       vbInOut.push_back( true) ;
      // Divido il loop usando le catene
       if ( ! DecomposeLoop( cvOpenChain, vnDegVec, cvBoundClosedLoopVec, vbInOut)) {
-         if ( int( cvBoundClosedLoopVec.size()) == 1  &&  int( cvOpenChain.size()) == 2) {
+         if ( cvBoundClosedLoopVec.size() == 1  &&  cvOpenChain.size() == 2) {
             Point3d ptLink0St = cvOpenChain[0][0].ptSt ;
             Point3d ptLink0En = cvOpenChain[0].back().ptEn ;
             Point3d ptLink1St = cvOpenChain.back()[0].ptSt ;
@@ -571,7 +564,7 @@ SurfTriMesh::RetriangulationForBooleanOperation( CHAINMAP& LoopLines, TRIA3DVECT
       POLYLINEVECTOR vplPolyVec ;
       vplPolyVec.resize( cvBoundClosedLoopVec.size()) ;
       for ( int nLoop = 0 ; nLoop < int( vplPolyVec.size()) ; ++ nLoop) {
-         for (int nLine = 0 ; nLine < int( cvBoundClosedLoopVec[nLoop].size()) ; ++ nLine) {
+         for ( int nLine = 0 ; nLine < int( cvBoundClosedLoopVec[nLoop].size()) ; ++ nLine) {
             vplPolyVec[nLoop].AddUPoint( 0., cvBoundClosedLoopVec[nLoop][nLine]) ;
          }
          vplPolyVec[nLoop].AddUPoint( 0., cvBoundClosedLoopVec[nLoop][0]) ;
@@ -1616,7 +1609,7 @@ SurfTriMesh::Subtract( const ISurfTriMesh& Other)
    Scale( frScalingRef, 1. / BOOLEAN_SCALE, 1. / BOOLEAN_SCALE, 1. / BOOLEAN_SCALE) ;
 
    if ( ! SimplifyFacets())
-      LOG_ERROR( GetEGkLogger(), "Error in SimplifyFacets of Stm::Intersect")
+      LOG_ERROR( GetEGkLogger(), "Error in SimplifyFacets of Stm::Subtract")
    
    return bOk ;
 }
@@ -1750,7 +1743,7 @@ SurfTriMesh::Repair( double dMaxEdgeLen)
 
   // Ritriangolo le facce
    if ( ! SimplifyFacets( dMaxEdgeLen, true))
-      LOG_ERROR( GetEGkLogger(), "Error in SimplifyFacets of Stm::Intersect")
+      LOG_ERROR( GetEGkLogger(), "Error in SimplifyFacets of Stm::Repair")
 
    return true ;
 }