diff --git a/htdocs/accountancy/bookkeeping/card.php b/htdocs/accountancy/bookkeeping/card.php
index 28b7b177860c785b1e7118a3d58c46d30f8e200d..9be65e7261a3695740f0dd656ee9df5b555adf0a 100644
--- a/htdocs/accountancy/bookkeeping/card.php
+++ b/htdocs/accountancy/bookkeeping/card.php
@@ -37,7 +37,7 @@ $id = GETPOST('id', 'int');
 if ($user->societe_id > 0) {
 	accessforbidden();
 }
-$action = GETPOST('action');
+$action = GETPOST('action','aZ09');
 $mode = GETPOST('mode');
 $piece_num = GETPOST("piece_num");
 
diff --git a/htdocs/accountancy/report/result.php b/htdocs/accountancy/report/result.php
index 175c99554989dfb6dde8e563adb61eda2942598b..b8335e2d8f7c20f5cb08a4418ff48da7ac7995aa 100644
--- a/htdocs/accountancy/report/result.php
+++ b/htdocs/accountancy/report/result.php
@@ -36,7 +36,7 @@ $langs->load("accountancy");
 $langs->load("compta");
 
 $mesg = '';
-$action = GETPOST('action');
+$action = GETPOST('action','aZ09');
 $cat_id = GETPOST('account_category');
 $selectcpt = GETPOST('cpt_bk');
 $id = GETPOST('id', 'int');
diff --git a/htdocs/core/class/html.formmail.class.php b/htdocs/core/class/html.formmail.class.php
index d6089ebdb54811f33d0ef6a34669cfe1af6f5ed5..c33b798c3a9e6e171875fd2391cce8a2c71d4b0b 100644
--- a/htdocs/core/class/html.formmail.class.php
+++ b/htdocs/core/class/html.formmail.class.php
@@ -529,7 +529,7 @@ class FormMail extends Form
         				    $tmparray[$key]=dol_htmlentities($tmparray[$key], null, 'UTF-8', true);
         				}
         				$withtoselected=GETPOST("receiver");     // Array of selected value
-        				if (empty($withtoselected) && count($tmparray) == 1 && GETPOST('action') == 'presend')
+        				if (empty($withtoselected) && count($tmparray) == 1 && GETPOST('action','aZ09') == 'presend')
         				{
         				    $withtoselected = array_keys($tmparray);
         				}
diff --git a/htdocs/loan/createschedule.php b/htdocs/loan/createschedule.php
index 596cc9fd536865426ee4eed197c75f023ddd67d9..70688461ae9859aee87d613702dfef30ef417be1 100644
--- a/htdocs/loan/createschedule.php
+++ b/htdocs/loan/createschedule.php
@@ -31,7 +31,7 @@ require_once DOL_DOCUMENT_ROOT.'/loan/class/loanschedule.class.php';
 global $user;
 
 $loanid = GETPOST('loanid', 'int');
-$action = GETPOST('action');
+$action = GETPOST('action','aZ09');
 
 $object = new Loan($db);
 $object->fetch($loanid);