diff --git a/pymf/tb/utils.py b/pymf/tb/utils.py
index 8ef99cd8b64e6ba6ad7e04fd6d62501fff9f5aa1..123b559f3cd80683cb1f28143aa86f21df085303 100644
--- a/pymf/tb/utils.py
+++ b/pymf/tb/utils.py
@@ -14,7 +14,7 @@ def generate_guess(
     Parameters
     ----------
     tb_keys :
-       List of tight-binding dictionary keys the guess contains.
+       List of hopping vectors (tight-binding dictionary keys) the guess contains.
     ndof :
         Number internal degrees of freedom within the unit cell.
     scale :