diff --git a/src/SMDS/SMDS_VolumeTool.hxx b/src/SMDS/SMDS_VolumeTool.hxx
index 5c2c882f6..4e018c0c7 100644
--- a/src/SMDS/SMDS_VolumeTool.hxx
+++ b/src/SMDS/SMDS_VolumeTool.hxx
@@ -63,7 +63,7 @@ class SMDS_EXPORT SMDS_VolumeTool
 
   bool Set( const SMDS_MeshElement*                  theVolume,
             const bool                               ignoreCentralNodes = true,
-            const std::vector<const SMDS_MeshNode*>* nodes = NULL);
+            const std::vector<const SMDS_MeshNode*>* nodes = 0);
   // Set volume.
   // Return false if theVolume is not of type SMDSAbs_Volume.
   // ignoreCentralNodes makes skip nodes at face centers when returning
diff --git a/src/SMESH_I/SMESH_Group_i.cxx b/src/SMESH_I/SMESH_Group_i.cxx
index 7df1384ca..d9c4b0961 100644
--- a/src/SMESH_I/SMESH_Group_i.cxx
+++ b/src/SMESH_I/SMESH_Group_i.cxx
@@ -480,7 +480,6 @@ SMESH::long_array* SMESH_GroupBase_i::GetListOfID()
     if ( 0 < aSize && aSize < 100 ) // for comfortable testing ;)
       std::sort( &aRes[0], &aRes[0]+aSize );
   }
-  MESSAGE("get list of IDs of a vague group");
   return aRes._retn();
 }
 
@@ -673,7 +672,6 @@ void SMESH_GroupBase_i::SetColorNumber(CORBA::Long color)
     aGroupDS->SetColorGroup(color);
     TPythonDump()<<SMESH::SMESH_GroupBase_var(_this())<<".SetColorNumber( "<<color<<" )";
   }
-  MESSAGE("set color number of a group");
   return ;
 }
 
diff --git a/src/SMESH_I/SMESH_MeshEditor_i.cxx b/src/SMESH_I/SMESH_MeshEditor_i.cxx
index c0248c87e..0ba74d70f 100644
--- a/src/SMESH_I/SMESH_MeshEditor_i.cxx
+++ b/src/SMESH_I/SMESH_MeshEditor_i.cxx
@@ -4206,7 +4206,7 @@ void SMESH_MeshEditor_i::MergeNodes (const SMESH::array_of_long_array& GroupsOfN
 
   getEditor().MergeNodes( aListOfListOfNodes, AvoidMakingHoles );
 
-  aTPythonDump << "], " << NodesToKeep << ")";
+  aTPythonDump << "], " << NodesToKeep << ", " << AvoidMakingHoles << ")";
 
   declareMeshModified( /*isReComputeSafe=*/false );