diff --git a/pytriqs/operators/operators2_desc.py b/pytriqs/operators/operators2_desc.py
index d251ffac..bd0f255f 100644
--- a/pytriqs/operators/operators2_desc.py
+++ b/pytriqs/operators/operators2_desc.py
@@ -52,4 +52,5 @@ module.add_function(name = "c_dag", signature="many_body_operator<double>(int i,
 # to generate the module code
 if __name__ == '__main__' : 
    module.generate_code(mako_template = sys.argv[1], wrap_file = sys.argv[2])
+   module.generate_py_converter_header(mako_template = sys.argv[3], wrap_file = sys.argv[4])