Remove the `.Provider.` bit.
diff --git a/openstack/blockstorage/v1/apiversions/requests.go b/openstack/blockstorage/v1/apiversions/requests.go
index a56f249..016bf37 100644
--- a/openstack/blockstorage/v1/apiversions/requests.go
+++ b/openstack/blockstorage/v1/apiversions/requests.go
@@ -19,7 +19,7 @@
func Get(client *gophercloud.ServiceClient, v string) GetResult {
var res GetResult
_, err := perigee.Request("GET", getURL(client, v), perigee.Options{
- MoreHeaders: client.Provider.AuthenticatedHeaders(),
+ MoreHeaders: client.AuthenticatedHeaders(),
OkCodes: []int{200},
Results: &res.Body,
})