diff --git a/parser/parser-gulp/main.py b/parser/parser-gulp/main.py
index 54734164534ee2b63351d9b039e18626ab912120..44e3d7e4c687585dfa045dd6f04f5df0dfd41d82 100644
--- a/parser/parser-gulp/main.py
+++ b/parser/parser-gulp/main.py
@@ -301,6 +301,7 @@ class GulpContext(object):
             num = get_spacegroup_number(self.spacegroup)
 
             basis_atoms = Atoms(ase_symbols, tags=tags,
+                                cell=np.eye(3),
                                 scaled_positions=positions)
 
             unique_labels = set(gulp_labels)