diff --git a/src/qibochem/driver/molecule.py b/src/qibochem/driver/molecule.py
index 1a5b591..afd5431 100644
--- a/src/qibochem/driver/molecule.py
+++ b/src/qibochem/driver/molecule.py
@@ -71,6 +71,7 @@ class Molecule:
     n_active_e = attr.ib(default=0, validator=attr.validators.instance_of(int))
     n_active_orbs = attr.ib(default=0, validator=attr.validators.instance_of(int))
 
+    #Runs after init, formerly the _process_xyz_file function
     def __attrs_post_init__(self):
         """
         Reads a .xyz file to obtain and set the molecular coordinates (in OpenFermion format),