diff --git a/classes/stock/StockAvailable.php b/classes/stock/StockAvailable.php
index bc97c0d91..fbdaa1a2f 100644
--- a/classes/stock/StockAvailable.php
+++ b/classes/stock/StockAvailable.php
@@ -367,9 +367,11 @@ class StockAvailableCore extends ObjectModel
 	 */
 	public function add($autodate = true, $null_values = false)
 	{
-		if (!parent::add($autodate, $null_values))
+		if (!$result = parent::add($autodate, $null_values))
 			return false;
-		$this->postSave();
+
+		$result &= $this->postSave();		
+		return $result;
 	}
 
 	/**
@@ -378,9 +380,11 @@ class StockAvailableCore extends ObjectModel
 	 */
 	public function update($null_values = false)
 	{
-		if (!parent::update($null_values))
+		if (!$result = parent::update($null_values))
 			return false;
-		return $this->postSave();
+
+		$result &= $this->postSave();		
+		return $result;
 	}
 
 	/**