diff --git a/appsys/core/URI.php b/appsys/core/URI.php
index 1787b0d..8f56143 100644
--- a/appsys/core/URI.php
+++ b/appsys/core/URI.php
@@ -645,7 +645,7 @@ public function uri_string()
 	 */
 	public function ruri_string()
 	{
-		return ltrim(load_class('Router', 'core')->directory, '/').implode('/', $this->rsegments);
+		return ltrim((string) load_class('Router', 'core')->directory, '/').implode('/', $this->rsegments);
 	}
 
 }