diff --git a/openstack/identity/v2/extensions/delegate.go b/openstack/identity/v2/extensions/delegate.go
index 1992a2c..b3f921a 100644
--- a/openstack/identity/v2/extensions/delegate.go
+++ b/openstack/identity/v2/extensions/delegate.go
@@ -79,7 +79,11 @@
 // List returns a Pager which allows you to iterate over the full collection of extensions.
 // It does not accept query parameters.
 func List(c *gophercloud.ServiceClient) pagination.Pager {
-	return pagination.NewPager(c, common.ListExtensionURL(c), func(r pagination.LastHTTPResponse) pagination.Page {
-		return ExtensionPage{common.ExtensionPage{SinglePageBase: pagination.SinglePageBase(r)}}
-	})
+	pager := common.List(c)
+	pager.CreatePage = func(r pagination.LastHTTPResponse) pagination.Page {
+		return ExtensionPage{
+			ExtensionPage: common.ExtensionPage{SinglePageBase: pagination.SinglePageBase(r)},
+		}
+	}
+	return pager
 }