diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 48fcdaa5010..7d8d7c5bc7b 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -8132,10 +8132,10 @@ function dol_getIdFromCode($db, $key, $tablename, $fieldkey = 'code', $fieldid =
 /**
  * Verify if condition in string is ok or not
  *
- * @param 	string		$strRights		String with condition to check
- * @return 	boolean						True or False. Return True if strRights is ''
+ * @param 	string		$strToEvaluate	String with condition to check
+ * @return 	boolean						True or False. Note: It returns True if $strToEvaluate is ''
  */
-function verifCond($strRights)
+function verifCond($strToEvaluate)
 {
 	global $user, $conf, $langs;
 	global $leftmenu;
@@ -8143,8 +8143,8 @@ function verifCond($strRights)
 
 	//print $strRights."<br>\n";
 	$rights = true;
-	if ($strRights != '') {
-		$str = 'if(!('.$strRights.')) { $rights = false; }';
+	if ($strToEvaluate !== '') {
+		$str = 'if(!('.$strToEvaluate.')) { $rights = false; }';
 		dol_eval($str); // The dol_eval must contains all the global $xxx used into a condition
 	}
 	return $rights;
diff --git a/htdocs/product/inventory/class/inventory.class.php b/htdocs/product/inventory/class/inventory.class.php
index 3e83d62ecf2..b224667f1c6 100644
--- a/htdocs/product/inventory/class/inventory.class.php
+++ b/htdocs/product/inventory/class/inventory.class.php
@@ -101,8 +101,7 @@ class Inventory extends CommonObject
 		'title'          => array('type'=>'varchar(255)', 'label'=>'Label', 'visible'=>1, 'enabled'=>1, 'position'=>25, 'css'=>'minwidth300', 'csslist'=>'tdoverflowmax200'),
 		'fk_warehouse'   => array('type'=>'integer:Entrepot:product/stock/class/entrepot.class.php', 'label'=>'Warehouse', 'visible'=>1, 'enabled'=>1, 'position'=>30, 'index'=>1, 'help'=>'InventoryForASpecificWarehouse', 'picto'=>'stock', 'css'=>'minwidth300 maxwidth500 widthcentpercentminusx', 'csslist'=>'tdoverflowmax200'),
 		'fk_product'     => array('type'=>'integer:Product:product/class/product.class.php', 'label'=>'Product', 'visible'=>1, 'enabled'=>1, 'position'=>32, 'index'=>1, 'help'=>'InventoryForASpecificProduct', 'picto'=>'product', 'css'=>'minwidth300 maxwidth500 widthcentpercentminusx', 'csslist'=>'tdoverflowmax200'),
-		'date_inventory' => array('type'=>'date', 'label'=>'DateValue', 'visible'=>1, 'enabled'=>1, 'position'=>35),
-
+		'date_inventory' => array('type'=>'date', 'label'=>'DateValue', 'visible'=>1, 'enabled'=>0, 'position'=>35),	// This date is not used so disabled.
 		'date_creation' => array('type'=>'datetime', 'label'=>'DateCreation', 'enabled'=>1, 'visible'=>-2, 'notnull'=>1, 'position'=>500),
 		'tms'           => array('type'=>'timestamp', 'label'=>'DateModification', 'enabled'=>1, 'visible'=>-2, 'notnull'=>1, 'position'=>501),
 		'date_validation' => array('type'=>'datetime', 'label'=>'DateValidation', 'visible'=>-2, 'enabled'=>1, 'position'=>502),