diff --git a/ansible/roles/horizon/templates/local_settings.j2 b/ansible/roles/horizon/templates/local_settings.j2
index 8ca6b74484e077163f94c5dbc61d7444709abd9b..b4fbbf99d5d1fe02f83ad2c4e927fee43911f891 100644
--- a/ansible/roles/horizon/templates/local_settings.j2
+++ b/ansible/roles/horizon/templates/local_settings.j2
@@ -224,7 +224,7 @@ WEBSSO_ENABLED = True
 # Do not remove the mandatory credentials mechanism.
 # Note: The last two tuples are sample mapping keys to a identity provider
 # and federation protocol combination (WEBSSO_IDP_MAPPING).
-WEBSSO_KEYSTONE_URL = "{{ keystone_public_url }}"
+WEBSSO_KEYSTONE_URL = "{{ keystone_public_url }}/v3"
 WEBSSO_CHOICES = (
     ("credentials", _("Keystone Credentials")),
     {% for idp in keystone_identity_providers %}