diff --git a/moulinette/core.py b/moulinette/core.py
index 0dc3c1f8..6bb03a1b 100644
--- a/moulinette/core.py
+++ b/moulinette/core.py
@@ -372,7 +372,7 @@ class MoulinetteSignals(object):
 
         Keyword arguments:
             - authenticator -- The authenticator object to use
-            - help -- A help message for the authenticator
+            - help -- The translation key of the authenticator's help message
 
         Returns:
             The authenticator object
@@ -380,10 +380,6 @@ class MoulinetteSignals(object):
         """
         if authenticator.is_authenticated:
             return authenticator
-
-        # Retrieve help translation since it's not loaded yet
-        if help:
-            help = m18n.n(help)
         return self._authenticate(authenticator, help)
 
     def prompt(self, message, is_password=False, confirm=False):
diff --git a/moulinette/interfaces/cli.py b/moulinette/interfaces/cli.py
index 270d7246..07cdced0 100644
--- a/moulinette/interfaces/cli.py
+++ b/moulinette/interfaces/cli.py
@@ -218,7 +218,7 @@ class Interface(BaseInterface):
 
         """
         # TODO: Allow token authentication?
-        msg = help or m18n.g('password')
+        msg = m18n.n(help) if help else m18n.g('password')
         return authenticator(password=self._do_prompt(msg, True, False,
                                                       color='yellow'))