Metadata -> Metadatum; Metadatas -> Metadata
diff --git a/openstack/compute/v2/servers/urls.go b/openstack/compute/v2/servers/urls.go
index a5e6576..4bc6586 100644
--- a/openstack/compute/v2/servers/urls.go
+++ b/openstack/compute/v2/servers/urls.go
@@ -30,10 +30,10 @@
 	return client.ServiceURL("servers", id, "action")
 }
 
-func metadataURL(client *gophercloud.ServiceClient, id, key string) string {
+func metadatumURL(client *gophercloud.ServiceClient, id, key string) string {
 	return client.ServiceURL("servers", id, "metadata", key)
 }
 
-func metadatasURL(client *gophercloud.ServiceClient, id string) string {
+func metadataURL(client *gophercloud.ServiceClient, id string) string {
 	return client.ServiceURL("servers", id, "metadata")
 }