diff --git a/Tree.cpp b/Tree.cpp
index e885059..8a7689a 100644
--- a/Tree.cpp
+++ b/Tree.cpp
@@ -3795,14 +3795,14 @@ Tree::CategorizeCell( int nId)
                         Point3d ptIntersIn = m_mTree[nNeigh].m_vInters[r].vpt[0] ;
                         if ( (m_mTree[nNeigh].m_vInters[r].nOut == 0  ||  m_mTree[nNeigh].m_vInters[r].nOut == 7) &&
                              ( CheckIfBefore( 2, ptBr, ptIntersOut)  ||  AreSamePointApprox( ptBr, ptIntersOut))) {
-                           if (ptIntersOut.x < ptLeftMostInters.x) {
+                           if (ptIntersOut.x <= ptLeftMostInters.x) {
                               ptLeftMostInters = ptIntersOut ;
                               bFound = true ;
                            }
                         }
                         if ( (m_mTree[nNeigh].m_vInters[r].nIn == 0  ||  m_mTree[nNeigh].m_vInters[r].nIn == 7) &&
                               ( CheckIfBefore( 2, ptBr, ptIntersIn)  ||  AreSamePointApprox( ptBr, ptIntersIn))) {
-                           if (ptIntersIn.x < ptLeftMostInters.x) {
+                           if (ptIntersIn.x <= ptLeftMostInters.x) {
                               ptLeftMostInters = ptIntersIn ;
                               bFound = false ;
                            }