diff --git a/h5p.classes.php b/h5p.classes.php
index 1364699..4440cb8 100644
--- a/h5p.classes.php
+++ b/h5p.classes.php
@@ -149,6 +149,7 @@ class h5pValidator {
     'minorVersion' => '/^[0-9]{1,5}$/',
     'patchVersion' => '/^[0-9]{1,5}$/',
     'machineName' => '/^[\w0-9\-\.]{1,255}$/i',
+    'runable' => '/^(0|1)$/'
   );
 
   private $libraryOptional  = array(