diff --git a/src/SMESH/SMESH_MeshEditor.cxx b/src/SMESH/SMESH_MeshEditor.cxx
index 966e3e4aa..de20777e9 100644
--- a/src/SMESH/SMESH_MeshEditor.cxx
+++ b/src/SMESH/SMESH_MeshEditor.cxx
@@ -1808,7 +1808,7 @@ namespace
     TSplitMethod( int nbTet=0, const int* conn=0, bool addNode=false)
       : _nbSplits(nbTet), _nbCorners(4), _connectivity(conn), _baryNode(addNode), _ownConn(false) {}
     ~TSplitMethod() { if ( _ownConn ) delete [] _connectivity; _connectivity = 0; }
-	TSplitMethod(TSplitMethod &splitMethod)
+	TSplitMethod(const TSplitMethod &splitMethod)
 		: _nbSplits(splitMethod._nbSplits),
 		_nbCorners(splitMethod._nbCorners),
 		_baryNode(splitMethod._baryNode),
@@ -1816,8 +1816,8 @@ namespace
 		_faceBaryNode(splitMethod._faceBaryNode)
 	{
 		_connectivity = splitMethod._connectivity;
-		splitMethod._connectivity = nullptr;
-		splitMethod._ownConn = false;
+		const_cast<TSplitMethod&>(splitMethod)._connectivity = nullptr;
+		const_cast<TSplitMethod&>(splitMethod)._ownConn = false;
 	}
     bool hasFacet( const TTriangleFacet& facet ) const
     {