diff --git a/classes/db/queryparts/expression/UpdateExpressionWithoutArgument.class.php b/classes/db/queryparts/expression/UpdateExpressionWithoutArgument.class.php
index 723a45366..5c025162e 100644
--- a/classes/db/queryparts/expression/UpdateExpressionWithoutArgument.class.php
+++ b/classes/db/queryparts/expression/UpdateExpressionWithoutArgument.class.php
@@ -25,7 +25,7 @@ class UpdateExpressionWithoutArgument extends UpdateExpression
 	 */
 	function __construct($column_name, $argument)
 	{
-		parent::__construct($column_name);
+		parent::__construct($column_name, $argument);
 		$this->argument = $argument;
 	}