diff --git a/freeradius_utils/auth.py b/freeradius_utils/auth.py
index 328d2cd0..7c32f05c 100644
--- a/freeradius_utils/auth.py
+++ b/freeradius_utils/auth.py
@@ -193,9 +193,7 @@ def post_auth(data):
     if switch:
         # For logging
         sw_name = switch["name"] or "?"
-        room = "Unknown port"
-        if port:
-            room = port["room"] or "Unknown room"
+        room = port["room"] or "Unknown room" if port else "Unknown port"
 
         out = decide_vlan_switch(data_from_api, mac, nas_port)
         reason, vlan_id, decision, attributes = out
@@ -388,7 +386,7 @@ def decide_vlan_switch(data_from_api, user_mac, nas_port):
     # If a vlan is precised in port config, we use it
     if port_profile["vlan_untagged"]:
         DECISION_VLAN = int(port_profile["vlan_untagged"]["vlan_id"])
-        extra_log = "Force sur vlan " + str(DECISION_VLAN)
+        extra_log = "Force sur vlan %s" % str(DECISION_VLAN)
         attributes = ()
     else:
         DECISION_VLAN = radius_option["vlan_decision_ok"]["vlan_id"]
diff --git a/re2o/acl.py b/re2o/acl.py
index d1d2c3a9..72633256 100644
--- a/re2o/acl.py
+++ b/re2o/acl.py
@@ -6,6 +6,7 @@
 # Copyright © 2017  Gabriel Détraz
 # Copyright © 2017  Lara Kermarec
 # Copyright © 2017  Augustin Lemesle
+# Copyright © 2020  Corentin Canebier
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/re2o/mixins.py b/re2o/mixins.py
index ddc827b6..e0ce3310 100644
--- a/re2o/mixins.py
+++ b/re2o/mixins.py
@@ -5,6 +5,7 @@
 #
 # Copyright © 2018  Gabriel Détraz
 # Copyright © 2017  Charlie Jacomme
+# Copyright © 2020  Corentin Canebier
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by