diff --git a/unitex/utils/formats.py b/unitex/utils/formats.py
index b9f4f97c13729c7c89ee664c6f36058bb14d8901..40313b50a56a844de45ba0d9000ad12d057640cd 100644
--- a/unitex/utils/formats.py
+++ b/unitex/utils/formats.py
@@ -6,7 +6,6 @@ import logging
 import re
 import struct
 
-from builtins import chr
 from io import open
 
 from unitex import UnitexException, UnitexConstants