diff --git a/openstack/blockstorage/extensions/tenantattr/results.go b/openstack/blockstorage/extensions/tenantattr/results.go
new file mode 100644
index 0000000..5e9ef23
--- /dev/null
+++ b/openstack/blockstorage/extensions/tenantattr/results.go
@@ -0,0 +1,5 @@
+package tenantattr
+
+type VolumeExt struct {
+	TenantID string `json:"os-vol-tenant-attr:tenant_id"`
+}