diff --git a/roles/koji_hub/files/koji-gc.py-hotfix b/roles/koji_hub/files/koji-gc.py-hotfix
index b43f8aa91b..4116f3b184 100755
--- a/roles/koji_hub/files/koji-gc.py-hotfix
+++ b/roles/koji_hub/files/koji-gc.py-hotfix
@@ -131,7 +131,7 @@ def get_options():
             ['keytab', None, 'string'],
             ['principal', None, 'string'],
             ['krbservice', None, 'string'],
-            ['krb_rdns', True, 'boolean'],
+            ['krb_rdns', None, 'boolean'],
             ['runas', None, 'string'],
             ['user', None, 'string'],
             ['password', None, 'string'],
@@ -352,7 +352,7 @@ def activate_session(session):
     elif options.user:
         #authenticate using user/password
         session.login()
-    elif has_krb_creds():
+    elif has_krb_creds() or (options.keytab and options.principal):
         try:
             if options.keytab and options.principal:
                 session.krb_login(principal=options.principal, keytab=options.keytab, proxyuser=options.runas)