diff --git a/test/functional/feature_blocksign.py b/test/functional/feature_blocksign.py
index b3603bb5c5..ff44d762b4 100755
--- a/test/functional/feature_blocksign.py
+++ b/test/functional/feature_blocksign.py
@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 
-import codecs
 import hashlib
 import random