diff --git a/phrase_index.py b/phrase_index.py
index eec8a3b..6dc3748 100644
--- a/phrase_index.py
+++ b/phrase_index.py
@@ -2,8 +2,7 @@ import pathlib
 import sys
 import duckdb
 import ir_datasets
-import collections
-import pandas as pd
+
 
 from phrases_extractor import extract_phrases_pmi_duckdb
 from ze_index import normalize
diff --git a/phrases_extractor.py b/phrases_extractor.py
index 3eacb98..32304c0 100644
--- a/phrases_extractor.py
+++ b/phrases_extractor.py
@@ -1,5 +1,4 @@
 import duckdb
-import math
 from collections import Counter
 
 def create_tokenizer_duckdb(con):