diff --git a/weboob/tools/captcha/virtkeyboard.py b/weboob/tools/captcha/virtkeyboard.py
index c84fd2b7..d33ef690 100644
--- a/weboob/tools/captcha/virtkeyboard.py
+++ b/weboob/tools/captcha/virtkeyboard.py
@@ -20,7 +20,6 @@
 
 import hashlib
 import tempfile
-from string import maketrans
 
 try:
     from PIL import Image