diff --git a/openstack/utils/choose_version.go b/openstack/utils/choose_version.go
index caeaf63..c605d08 100644
--- a/openstack/utils/choose_version.go
+++ b/openstack/utils/choose_version.go
@@ -59,7 +59,7 @@
 	}
 
 	var resp response
-	_, err := client.Request("GET", client.IdentityBase, gophercloud.RequestOpts{
+	_, err := client.Request("GET", client.IdentityBase, &gophercloud.RequestOpts{
 		JSONResponse: &resp,
 		OkCodes:      []int{200, 300},
 	})