diff --git a/classes/Product.php b/classes/Product.php
index c70f2e82e..1a3620c55 100644
--- a/classes/Product.php
+++ b/classes/Product.php
@@ -1101,7 +1101,7 @@ class ProductCore extends ObjectModel
 		$this->addSupplierReference($supplier_reference, $id_product_attribute);
 		$result = ObjectModel::updateMultishopTable('Combination', array(
 			'wholesale_price' => (float)$wholesale_price,
-		), 'id_product_attribute = '.(int)$id_product_attribute);
+		), 'a.id_product_attribute = '.(int)$id_product_attribute);
 
 		if (!$id_product_attribute || !$result)
 			return false;
@@ -1144,11 +1144,11 @@ class ProductCore extends ObjectModel
 	{
 		$result = ObjectModel::updateMultishopTable('Combination', array(
 			'default_on' => 1
-		), '`id_product` = '.(int)$this->id.' AND `id_product_attribute` = '.(int)$id_product_attribute);
+		), '`id_product` = '.(int)$this->id.' AND a.`id_product_attribute` = '.(int)$id_product_attribute);
 
 		$result &= ObjectModel::updateMultishopTable('product', array(
 			'cache_default_attribute' => (int)$id_product_attribute,
-		), '`id_product` = '.(int)$this->id);
+		), '`a.id_product` = '.(int)$this->id);
 
 		return $result;
 	}
@@ -2762,7 +2762,7 @@ class ProductCore extends ObjectModel
 		if (!$mini)
 			return false;
 
-		if (!ObjectModel::updateMultishopTable('Combination', array('default_on' => 1), 'id_product_attribute = '.(int)$mini['id_attr']))
+		if (!ObjectModel::updateMultishopTable('Combination', array('default_on' => 1), 'a.id_product_attribute = '.(int)$mini['id_attr']))
 			return false;
 		return true;
 	}
@@ -3821,7 +3821,7 @@ class ProductCore extends ObjectModel
 					return false;
 			}
 
-		if ($has_required_fields && !ObjectModel::updateMultishopTable('product', array('customizable' => 2), 'id_product = '.(int)$this->id))
+		if ($has_required_fields && !ObjectModel::updateMultishopTable('product', array('customizable' => 2), 'a.id_product = '.(int)$this->id))
 			return false;
 
 		if (!$this->_deleteOldLabels())
diff --git a/classes/Search.php b/classes/Search.php
index f8f99f1d7..11024c37f 100644
--- a/classes/Search.php
+++ b/classes/Search.php
@@ -574,7 +574,7 @@ class SearchCore
 	protected static function setProductsAsIndexed(&$products)
 	{
 		if (count($products))
-			ObjectModel::updateMultishopTable('Product', array('indexed' => 1), 'id_product IN ('.implode(',', $products).')');
+			ObjectModel::updateMultishopTable('Product', array('indexed' => 1), 'a.id_product IN ('.implode(',', $products).')');
 	}
 
 	/** $queryArray3 is automatically emptied in order to be reused immediatly */
diff --git a/classes/Tag.php b/classes/Tag.php
index d60082b6f..e96621d35 100644
--- a/classes/Tag.php
+++ b/classes/Tag.php
@@ -192,7 +192,7 @@ class TagCore extends ObjectModel
 		if (is_array($array))
 		{
 			$array = array_map('intval', $array);
-			$result &= ObjectModel::updateMultishopTable('Product', array('indexed' => 0), 'id_product IN ('.implode(',', $array).')');
+			$result &= ObjectModel::updateMultishopTable('Product', array('indexed' => 0), 'a.id_product IN ('.implode(',', $array).')');
 			$ids = array();
 			foreach ($array as $id_product)
 				$ids[] = '('.(int)$id_product.','.(int)$this->id.')';
diff --git a/controllers/admin/AdminPPreferencesController.php b/controllers/admin/AdminPPreferencesController.php
index f9d767423..270bacb08 100644
--- a/controllers/admin/AdminPPreferencesController.php
+++ b/controllers/admin/AdminPPreferencesController.php
@@ -246,7 +246,7 @@ class AdminPPreferencesControllerCore extends AdminController
 		if (Configuration::get('PS_ADVANCED_STOCK_MANAGEMENT') == 1 &&
 			(int)Tools::getValue('PS_ADVANCED_STOCK_MANAGEMENT') == 0)
 		{
-			ObjectModel::updateMultishopTable('Product', array('advanced_stock_management' => 0), '`advanced_stock_management` = 1');
+			ObjectModel::updateMultishopTable('Product', array('advanced_stock_management' => 0), 'a.`advanced_stock_management` = 1');
 
 			Db::getInstance()->execute(
 				'UPDATE `'._DB_PREFIX_.'stock_available`
diff --git a/controllers/admin/AdminProductsController.php b/controllers/admin/AdminProductsController.php
index a89aa9050..7259e99b3 100644
--- a/controllers/admin/AdminProductsController.php
+++ b/controllers/admin/AdminProductsController.php
@@ -2480,8 +2480,8 @@ class AdminProductsControllerCore extends AdminController
 										'wholesale_price' => (float)Tools::convertPrice($price, $id_currency)
 									);
 									$where = '
-										id_product = '.(int)$product->id.'
-										AND id_product_attribute = '.(int)$attribute['id_product_attribute'];
+										a.id_product = '.(int)$product->id.'
+										AND a.id_product_attribute = '.(int)$attribute['id_product_attribute'];
 									ObjectModel::updateMultishopTable('Combination', $data, $where);
 								}
 								else