diff --git a/unimore_bda_6/analysis/nltk_sentiment.py b/unimore_bda_6/analysis/nltk_sentiment.py
index 730253e..25fc310 100644
--- a/unimore_bda_6/analysis/nltk_sentiment.py
+++ b/unimore_bda_6/analysis/nltk_sentiment.py
@@ -4,11 +4,9 @@ import nltk.sentiment
 import nltk.sentiment.util
 import logging
 import typing as t
-import itertools
 
 from ..database import TextReview, CachedDatasetFunc, TokenizedReview
 from .base import BaseSentimentAnalyzer, AlreadyTrainedError, NotTrainedError
-from ..log import count_passage
 from ..tokenizer import BaseTokenizer
 
 log = logging.getLogger(__name__)
diff --git a/unimore_bda_6/database/queries.py b/unimore_bda_6/database/queries.py
index 530b96d..97e8818 100644
--- a/unimore_bda_6/database/queries.py
+++ b/unimore_bda_6/database/queries.py
@@ -3,7 +3,6 @@ import pymongo
 import typing as t
 
 from ..config import WORKING_SET_SIZE
-from .collections import MongoReview
 from .datatypes import TextReview
 
 log = logging.getLogger(__name__)