diff --git a/htdocs/admin/const.php b/htdocs/admin/const.php
index ae4b9eb35dd..4a80df017cb 100644
--- a/htdocs/admin/const.php
+++ b/htdocs/admin/const.php
@@ -38,7 +38,7 @@ $action=GETPOST('action','alpha');
 $update=GETPOST('update','alpha');
 $delete=GETPOST('delete');	// Do not use alpha here
 $debug=GETPOST('debug','int');
-$consts=GETPOST('const');
+$consts=GETPOST('const','array');
 $constname=GETPOST('constname','alpha');
 $constvalue=GETPOST('constvalue');
 $constnote=GETPOST('constnote','alpha');
diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 46cc8e79991..2db0ac1fe29 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -174,7 +174,7 @@ function dol_shutdown()
  *  @param	string	$paramname   Name of parameter to found
  *  @param	string	$check	     Type of check (''=no check,  'int'=check it's numeric, 'alpha'=check it's text and sign, 'az'=check it's a-z only, 'array'=check it's array)
  *  @param	int		$method	     Type of method (0 = get then post, 1 = only get, 2 = only post, 3 = post then get, 4 = post then get then cookie)
- *  @return string      		 Value found, or '' if check fails
+ *  @return string||string[]      		 Value found, or '' if check fails
  */
 function GETPOST($paramname,$check='',$method=0)
 {