diff --git a/src/OBJECT/SMESH_CellLabelActor.cxx b/src/OBJECT/SMESH_CellLabelActor.cxx
index 07275df16..34220b870 100644
--- a/src/OBJECT/SMESH_CellLabelActor.cxx
+++ b/src/OBJECT/SMESH_CellLabelActor.cxx
@@ -43,6 +43,7 @@
 #include <vtkRenderer.h>
 #include <vtkUnstructuredGrid.h>
 #include <vtkCellData.h>
+#include <iostream>
 
 vtkStandardNewMacro(SMESH_CellLabelActor)
 
@@ -156,18 +157,21 @@ void SMESH_CellLabelActor::SetCellsLabeled(bool theIsCellsLabeled)
   {
     myCellsNumDataSet->ShallowCopy(aGrid);
     vtkUnstructuredGrid *aDataSet = myCellsNumDataSet;
-    int aNbElem = aDataSet->GetNumberOfCells();
-    vtkIntArray *anArray = vtkIntArray::New();
+    vtkIdType aNbElem = aDataSet->GetNumberOfCells();
+    vtkIdTypeArray *anArray = vtkIdTypeArray::New();
+    //
+    std::cout << "\n\n\n***********\nSizeof vtkIdType: " << sizeof(vtkIdType) << "\nSizeof smIdType: " << sizeof(smIdType) << "\n";
+    //
     anArray->SetNumberOfValues(aNbElem);
     myExtractUnstructuredGrid->BuildOut2InMap();
-    for(int anId = 0; anId < aNbElem; anId++)
+    for(vtkIdType anId = 0; anId < aNbElem; anId++)
     {
       vtkIdType id = anId;
       if(IsImplicitFunctionUsed())
         id = myExtractGeometry->GetElemObjId(id);
       id = myExtractUnstructuredGrid->GetInputId(id);
       id = (id >=0) ? id : anId;
-      int aSMDSId = myVisualObj->GetElemObjId(id);
+      vtkIdType aSMDSId = myVisualObj->GetElemObjId(id);
       anArray->SetValue(anId,aSMDSId);
     }
     aDataSet->GetCellData()->SetScalars(anArray);
diff --git a/src/OBJECT/SMESH_ExtractGeometry.cxx b/src/OBJECT/SMESH_ExtractGeometry.cxx
index 4a4ab1716..02fb74391 100644
--- a/src/OBJECT/SMESH_ExtractGeometry.cxx
+++ b/src/OBJECT/SMESH_ExtractGeometry.cxx
@@ -58,16 +58,16 @@ SMESH_ExtractGeometry::SMESH_ExtractGeometry()
 SMESH_ExtractGeometry::~SMESH_ExtractGeometry()
 {}
 
-vtkIdType SMESH_ExtractGeometry::GetElemObjId(int theVtkID)
+vtkIdType SMESH_ExtractGeometry::GetElemObjId(vtkIdType theVtkID)
 {
-  if( theVtkID < 0 || theVtkID >= (int)myElemVTK2ObjIds.size()) return -1;
+  if( theVtkID < 0 || theVtkID >= myElemVTK2ObjIds.size()) return -1;
   return myElemVTK2ObjIds[theVtkID];
 }
 
 
-vtkIdType SMESH_ExtractGeometry::GetNodeObjId(int theVtkID)
+vtkIdType SMESH_ExtractGeometry::GetNodeObjId(vtkIdType theVtkID)
 {
-  if ( theVtkID < 0 || theVtkID >= (int)myNodeVTK2ObjIds.size()) return -1;
+  if ( theVtkID < 0 || theVtkID >= myNodeVTK2ObjIds.size()) return -1;
   return myNodeVTK2ObjIds[theVtkID];
 }
 
diff --git a/src/OBJECT/SMESH_ExtractGeometry.h b/src/OBJECT/SMESH_ExtractGeometry.h
index f417c49b2..dac601095 100644
--- a/src/OBJECT/SMESH_ExtractGeometry.h
+++ b/src/OBJECT/SMESH_ExtractGeometry.h
@@ -42,8 +42,8 @@ public:
   }
   bool GetStoreMapping(){ return myStoreMapping;}
 
-  virtual vtkIdType GetNodeObjId(int theVtkID);
-  virtual vtkIdType GetElemObjId(int theVtkID);
+  virtual vtkIdType GetNodeObjId(vtkIdType theVtkID);
+  virtual vtkIdType GetElemObjId(vtkIdType theVtkID);
 
 protected:
   SMESH_ExtractGeometry();
diff --git a/src/OBJECT/SMESH_NodeLabelActor.cxx b/src/OBJECT/SMESH_NodeLabelActor.cxx
index 4d4afbf41..1b04fe731 100644
--- a/src/OBJECT/SMESH_NodeLabelActor.cxx
+++ b/src/OBJECT/SMESH_NodeLabelActor.cxx
@@ -146,14 +146,14 @@ void SMESH_NodeLabelActor::SetPointsLabeled(bool theIsPointsLabeled)
     myPointsNumDataSet->ShallowCopy(aGrid);
     vtkUnstructuredGrid *aDataSet = myPointsNumDataSet;
     
-    int aNbElem = aDataSet->GetNumberOfPoints();
+	vtkIdType aNbElem = aDataSet->GetNumberOfPoints();
     
-    vtkIntArray *anArray = vtkIntArray::New();
+	vtkIdTypeArray *anArray = vtkIdTypeArray::New();
     anArray->SetNumberOfValues( aNbElem );
     
     for ( vtkIdType anId = 0; anId < aNbElem; anId++ )
     {
-      int aSMDSId = myVisualObj->GetNodeObjId( anId );
+	    vtkIdType aSMDSId = myVisualObj->GetNodeObjId( anId );
       anArray->SetValue( anId, aSMDSId );
     }
     
diff --git a/src/StdMeshers/StdMeshers_Regular_1D.cxx b/src/StdMeshers/StdMeshers_Regular_1D.cxx
index 489a278d0..fff61641c 100644
--- a/src/StdMeshers/StdMeshers_Regular_1D.cxx
+++ b/src/StdMeshers/StdMeshers_Regular_1D.cxx
@@ -1096,7 +1096,9 @@ bool StdMeshers_Regular_1D::computeInternalParameters(SMESH_Mesh &     theMesh,
         double    r = double( nbSegPerDiap * ( iDiap + 1 )) / double( nbTot );
         double parI = par0 + ( par1 - par0 ) * r;
         Params.InsertBefore( i, parI );
-        nbsegs.insert( nbsegs.begin() + i-2 + iDiap, nbSegPerDiap );
+        auto it = nbsegs.begin();
+		    auto incr_it = i - 2 + iDiap;
+        nbsegs.insert( it + incr_it, nbSegPerDiap );
       }
       nbsegs[ i-2 + nbDiapason - 1 ] = nbSegPerDiap + nbTot % nbDiapason;
     }