diff --git a/src/nemos/basis/_transformer_basis.py b/src/nemos/basis/_transformer_basis.py
index dfbf982b..fd5d3584 100644
--- a/src/nemos/basis/_transformer_basis.py
+++ b/src/nemos/basis/_transformer_basis.py
@@ -116,7 +116,7 @@ def _unpack_inputs(self, X: FeatureMatrix) -> Generator:
         Returns
         -------
         :
-            A list of each individual input.
+            A generator looping on each individual input.
 
         """
         n_samples = X.shape[0]