diff --git a/impression/digicode.py b/impression/digicode.py
index c68df5d3..0c0c6a3e 100644
--- a/impression/digicode.py
+++ b/impression/digicode.py
@@ -113,7 +113,7 @@ def list_code(login=None):
     Renvoie la liste des codes existants.
     La liste est sous la forme [(code, age (en sec), contenu du fichier),...]
     """
-    response = requests.post(LIST_LINK + login if login else "", data={'password':digicode_pass}, verify=CERTIFICATE, timeout=2)
+    response = requests.post(LIST_LINK + (login if login else ""), data={'password':digicode_pass}, verify=CERTIFICATE, timeout=2)
     code_list = []
     for line in response.content.split('\n'):
         if line: