diff --git a/classes/stock/StockManager.php b/classes/stock/StockManager.php
index f8bd21ae4..c9b86b8c1 100644
--- a/classes/stock/StockManager.php
+++ b/classes/stock/StockManager.php
@@ -562,7 +562,7 @@ class StockManagerCore implements StockManagerInterface
 
 		// gets all stock_mvt for the given coverage period
 		$query = '
-			SELECT SUM(quantity) as quantity_out
+			SELECT SUM(view.quantity) as quantity_out
 			FROM
 			(	SELECT sm.`physical_quantity` as quantity
 				FROM `'._DB_PREFIX_.'stock_mvt` sm
@@ -576,7 +576,7 @@ class StockManagerCore implements StockManagerInterface
 				AND s.`id_product_attribute` = '.(int)$id_product_attribute.
 				($id_warehouse ? ' AND s.`id_warehouse` = '.(int)$id_warehouse : '').'
 				GROUP BY sm.`id_stock_mvt`
-			) as sq';
+			) as view';
 
 		$quantity_out = Db::getInstance(_PS_USE_SQL_SLAVE_)->getValue($query);
 		if (!$quantity_out)
diff --git a/controllers/admin/AdminStockCoverController.php b/controllers/admin/AdminStockCoverController.php
index 01454b723..02466c0fd 100644
--- a/controllers/admin/AdminStockCoverController.php
+++ b/controllers/admin/AdminStockCoverController.php
@@ -64,16 +64,18 @@ class AdminStockCoverControllerCore extends AdminController
 				'filter_key' => 'b!name'
 			),
 			'coverage' => array(
-				'title' => $this->l('Average time left'),
-				'width' => 150,
+				'title' => $this->l('Coverage'),
+				'width' => 160,
 				'orderby' => false,
-				'search' => false
+				'search' => false,
+				'hint' => $this->l('Days left before you run out of stock.')
 			),
 			'stock' => array(
 				'title' => $this->l('Quantity'),
 				'width' => 80,
 				'orderby' => false,
-				'search' => false
+				'search' => false,
+				'hint' => $this->l('Physical (usable) quantity.')
 			),
 		);
 
diff --git a/controllers/admin/AdminStockMvtController.php b/controllers/admin/AdminStockMvtController.php
index f67a4591e..e4081947f 100644
--- a/controllers/admin/AdminStockMvtController.php
+++ b/controllers/admin/AdminStockMvtController.php
@@ -284,10 +284,6 @@ class AdminStockMvtControllerCore extends AdminController
 				'width' => 250,
 				'havingFilter' => true
 			),
-			'id_order' => array(
-				'title' => $this->l('Supply Order'),
-				'width' => 40
-			),
 			'employee' => array(
 				'title' => $this->l('Employee'),
 				'width' => 100,