diff --git a/openstack_auth/user.py b/openstack_auth/user.py
index b996dc1e..1f184f26 100644
--- a/openstack_auth/user.py
+++ b/openstack_auth/user.py
@@ -22,7 +22,7 @@ from keystoneclient import exceptions as keystone_exceptions
 from .utils import check_token_expiration
 from .utils import get_keystone_version
 from .utils import get_project_list
-from .utils import is_ans1_token
+from .utils import is_asn1_token
 
 
 LOG = logging.getLogger(__name__)
@@ -71,7 +71,7 @@ class Token(object):
 
         #Token-related attributes
         self.id = auth_ref.auth_token
-        if is_ans1_token(self.id):
+        if is_asn1_token(self.id):
             self.id = hashlib.md5(self.id).hexdigest()
         self.expires = auth_ref.expires
 
diff --git a/openstack_auth/utils.py b/openstack_auth/utils.py
index c749f42a..678ef609 100644
--- a/openstack_auth/utils.py
+++ b/openstack_auth/utils.py
@@ -77,10 +77,10 @@ def check_token_expiration(token):
 
 
 # Copied from Keystone's keystone/common/cms.py file.
-PKI_ANS1_PREFIX = 'MII'
+PKI_ASN1_PREFIX = 'MII'
 
 
-def is_ans1_token(token):
+def is_asn1_token(token):
     '''
     thx to ayoung for sorting this out.
 
@@ -119,7 +119,7 @@ def is_ans1_token(token):
     It's not practical to support a token of this length or greater in http
     therefore, we will check for MII only and ignore the case of larger tokens
     '''
-    return token[:3] == PKI_ANS1_PREFIX
+    return token[:3] == PKI_ASN1_PREFIX
 
 
 # From django.contrib.auth.views