diff --git a/libraries/joomla/table/asset.php b/libraries/joomla/table/asset.php
index 4c29a284f71bd..37b8ddca433f5 100644
--- a/libraries/joomla/table/asset.php
+++ b/libraries/joomla/table/asset.php
@@ -119,6 +119,10 @@ public function check()
 
 				return false;
 			}
+			if (empty($this->rules))
+			{
+				$this->rules = '{}';
+			}
 		}
 
 		return true;