diff --git a/gestion/chgpass.py b/gestion/chgpass.py
index 434fc68c..ed6e2d3f 100755
--- a/gestion/chgpass.py
+++ b/gestion/chgpass.py
@@ -101,7 +101,7 @@ def check_password(password, no_cracklib=False, dialog=False):
                         msg = affich_tools.coul(msg, 'rouge', dialog=dialog)
                     return True, msg
                 except ValueError as e:
-                    msg += str(e).decode()
+                    msg += str(e).decode('utf-8')
 
                     if dialog:
                         msg = affich_tools.coul(msg, 'rouge', dialog=dialog)