diff --git a/quapy/data/datasets.py b/quapy/data/datasets.py
index 15a3921..79d0bbf 100644
--- a/quapy/data/datasets.py
+++ b/quapy/data/datasets.py
@@ -10,7 +10,7 @@ from sklearn.model_selection import StratifiedKFold
 
 import pandas as pd
 
-from data.base import Dataset, LabelledCollection
+from quapy.data.base import Dataset, LabelledCollection
 from quapy.data.preprocessing import text2tfidf, reduce_columns
 from quapy.data.reader import *
 from quapy.util import download_file_if_not_exists, download_file, get_quapy_home, pickled_resource
diff --git a/quapy/model_selection.py b/quapy/model_selection.py
index f3e9b18..feeb14d 100644
--- a/quapy/model_selection.py
+++ b/quapy/model_selection.py
@@ -5,7 +5,7 @@ from typing import Union, Callable
 
 import quapy as qp
 import quapy.functional as F
-from data.base import LabelledCollection
+from quapy.data.base import LabelledCollection
 from quapy.evaluation import artificial_sampling_prediction
 from quapy.method.aggregative import BaseQuantifier