diff --git a/keystoneclient/common/cms.py b/keystoneclient/common/cms.py
index c5b35da1c..1bd0f4192 100644
--- a/keystoneclient/common/cms.py
+++ b/keystoneclient/common/cms.py
@@ -227,8 +227,6 @@ def pkiz_verify(signed_text, signing_cert_file_name, ca_file_name):
                       inform=PKIZ_CMS_FORM)
 
 
-# This function is deprecated and will be removed once the ASN1 token format
-# is no longer required. It is only here to be used for testing.
 def token_to_cms(signed_text):
     """Converts a custom formatted token to a PEM-formatted token.