diff --git a/classes.py b/classes.py
index 91f7204..bb9acd2 100644
--- a/classes.py
+++ b/classes.py
@@ -953,13 +953,13 @@ class Irc():
     def checkAuthenticated(self, uid, allowAuthed=True, allowOper=True):
         """
         Checks whether the given user has operator status on PyLink, raising
-        NotAuthenticatedError and logging the access denial if not.
+        NotAuthorizedError and logging the access denial if not.
         """
         lastfunc = inspect.stack()[1][3]
         if not self.isOper(uid, allowAuthed=allowAuthed, allowOper=allowOper):
             log.warning('(%s) Access denied for %s calling %r', self.name,
                         self.getHostmask(uid), lastfunc)
-            raise utils.NotAuthenticatedError("You are not authenticated!")
+            raise utils.NotAuthorizedError("You are not authenticated!")
         return True
 
     def matchHost(self, glob, target, ip=True, realhost=True):
diff --git a/utils.py b/utils.py
index 21b54cc..a7e4476 100644
--- a/utils.py
+++ b/utils.py
@@ -16,7 +16,7 @@ from . import world, conf
 # This is just so protocols and plugins are importable.
 from pylinkirc import protocols, plugins
 
-class NotAuthenticatedError(Exception):
+class NotAuthorizedError(Exception):
     """
     Exception raised by checkAuthenticated() when a user fails authentication
     requirements.
@@ -266,7 +266,7 @@ class ServiceBot():
         for func in self.commands[cmd]:
             try:
                 func(irc, source, cmd_args)
-            except NotAuthenticatedError as e:
+            except NotAuthorizedError as e:
                 self.reply(irc, 'Error: Not authorized. %s' % e)
             except Exception as e:
                 log.exception('Unhandled exception caught in command %r', cmd)