diff --git a/c++/app4triqs/app4triqs.cpp b/c++/app4triqs/app4triqs.cpp
index 5d65b979..a16840c1 100644
--- a/c++/app4triqs/app4triqs.cpp
+++ b/c++/app4triqs/app4triqs.cpp
@@ -19,7 +19,7 @@ namespace app4triqs {
   void h5_write(h5::group grp, std::string subgroup_name, toto const &m) {
     grp = subgroup_name.empty() ? grp : grp.create_group(subgroup_name);
     h5_write(grp, "i", m.i);
-    h5_write_attribute(grp, "TRIQS_HDF5_data_scheme", toto::hdf5_format());
+    h5_write_attribute(grp, "Format", toto::hdf5_format());
   }
 
   void h5_read(h5::group grp, std::string subgroup_name, toto &m) {
diff --git a/c++/app4triqs/app4triqs.hpp b/c++/app4triqs/app4triqs.hpp
index e9764206..b92d513b 100644
--- a/c++/app4triqs/app4triqs.hpp
+++ b/c++/app4triqs/app4triqs.hpp
@@ -1,5 +1,6 @@
 #pragma once
 #include <triqs/gfs.hpp>
+#include <triqs/mesh.hpp>
 #include <h5/h5.hpp>
 
 namespace app4triqs {
diff --git a/python/app4triqs/app4triqs_module_desc.py b/python/app4triqs/app4triqs_module_desc.py
index eff521b9..161e72f7 100644
--- a/python/app4triqs/app4triqs_module_desc.py
+++ b/python/app4triqs/app4triqs_module_desc.py
@@ -1,5 +1,5 @@
 # Generated automatically using the command :
-# c++2py ../../c++/app4triqs/app4triqs.hpp -p --members_read_only -N app4triqs -a app4triqs -m app4triqs_module -o app4triqs_module --moduledoc="The app4triqs python module" -C pytriqs --cxxflags="-std=c++17" --target_file_only
+# c++2py ../../c++/app4triqs/app4triqs.hpp -p --members_read_only -N app4triqs -a app4triqs -m app4triqs_module -o app4triqs_module --moduledoc="The app4triqs python module" -C triqs --cxxflags="-std=c++17" --target_file_only
 from cpp2py.wrap_generator import *
 
 # The module
diff --git a/test/python/Basic.py b/test/python/Basic.py
index 9ff46e2d..c0472fc5 100644
--- a/test/python/Basic.py
+++ b/test/python/Basic.py
@@ -3,7 +3,7 @@
 import unittest
 
 from app4triqs import Toto, chain
-from triqs.archive import *
+from h5 import *
 from triqs.utility import mpi
 
 class test_toto(unittest.TestCase):