diff --git a/htdocs/admin/prelevement.php b/htdocs/admin/prelevement.php
index 0cfd03b7148..cc41286cea2 100644
--- a/htdocs/admin/prelevement.php
+++ b/htdocs/admin/prelevement.php
@@ -39,6 +39,8 @@ if (!$user->admin) accessforbidden();
 $action = GETPOST('action', 'alpha');
 $type = 'paymentorder';
 
+$error = 0;
+
 
 /*
  * Actions
@@ -74,35 +76,28 @@ if ($action == "set")
 	else $error++;
 
 	$res = dolibarr_set_const($db, "PRELEVEMENT_ICS", GETPOST("PRELEVEMENT_ICS"), 'chaine', 0, '', $conf->entity);
-	if (!$res > 0) $error++;
+	if (! ($res > 0)) $error++;
 
-	if (GETPOST("PRELEVEMENT_USER") > 0)
-	{
-		$res = dolibarr_set_const($db, "PRELEVEMENT_USER", GETPOST("PRELEVEMENT_USER"), 'chaine', 0, '', $conf->entity);
-		if (!$res > 0) $error++;
-	}
-	if (GETPOST("PRELEVEMENT_END_TO_END") || GETPOST("PRELEVEMENT_END_TO_END") == "")
-	{
-		$res = dolibarr_set_const($db, "PRELEVEMENT_END_TO_END", GETPOST("PRELEVEMENT_END_TO_END"), 'chaine', 0, '', $conf->entity);
-		if (!$res > 0) $error++;
-	}
-	if (GETPOST("PRELEVEMENT_USTRD") || GETPOST("PRELEVEMENT_USTRD") == "")
-	{
-		$res = dolibarr_set_const($db, "PRELEVEMENT_USTRD", GETPOST("PRELEVEMENT_USTRD"), 'chaine', 0, '', $conf->entity);
-		if (!$res > 0) $error++;
-	}
+    if (GETPOST("PRELEVEMENT_USER") > 0) {
+        $res = dolibarr_set_const($db, "PRELEVEMENT_USER", GETPOST("PRELEVEMENT_USER"), 'chaine', 0, '', $conf->entity);
+        if (! ($res > 0)) $error++;
+    }
+    if (GETPOST("PRELEVEMENT_END_TO_END") || GETPOST("PRELEVEMENT_END_TO_END") == "") {
+        $res = dolibarr_set_const($db, "PRELEVEMENT_END_TO_END", GETPOST("PRELEVEMENT_END_TO_END"), 'chaine', 0, '', $conf->entity);
+        if (! ($res > 0)) $error++;
+    }
+    if (GETPOST("PRELEVEMENT_USTRD") || GETPOST("PRELEVEMENT_USTRD") == "") {
+        $res = dolibarr_set_const($db, "PRELEVEMENT_USTRD", GETPOST("PRELEVEMENT_USTRD"), 'chaine', 0, '', $conf->entity);
+        if (! ($res > 0)) $error++;
+    }
 
-	if (GETPOST("PRELEVEMENT_ADDDAYS") || GETPOST("PRELEVEMENT_ADDDAYS") == "")
-	{
-		$res = dolibarr_set_const($db, "PRELEVEMENT_ADDDAYS", GETPOST("PRELEVEMENT_ADDDAYS"), 'chaine', 0, '', $conf->entity);
-		if (!$res > 0) $error++;
-	} elseif (!$error)
-	{
+    $res = dolibarr_set_const($db, "PRELEVEMENT_ADDDAYS", GETPOST("PRELEVEMENT_ADDDAYS"), 'chaine', 0, '', $conf->entity);
+    if (! ($res > 0)) $error++;
+
+    if (! $error) {
 		$db->commit();
 		setEventMessages($langs->trans("SetupSaved"), null, 'mesgs');
-	}
-	else
-	{
+	} else {
 		$db->rollback();
 		setEventMessages($langs->trans("Error"), null, 'errors');
 	}
@@ -196,9 +191,10 @@ print '</td></tr>';
 //ADDDAYS
 print '<tr class="oddeven"><td>'.$langs->trans("ADDDAYS").'</td>';
 print '<td class="left">';
-if (!$conf->global->PRELEVEMENT_ADDDAYS) $conf->global->PRELEVEMENT_ADDDAYS = 0;
+if (empty($conf->global->PRELEVEMENT_ADDDAYS)) $conf->global->PRELEVEMENT_ADDDAYS = 0;
 print '<input type="text" name="PRELEVEMENT_ADDDAYS" value="'.$conf->global->PRELEVEMENT_ADDDAYS.'" size="5" ></td>';
 print '</td></tr>';
+
 print '</table>';
 print '<br>';