diff --git a/htdocs/compta/resultat/clientfourn.php b/htdocs/compta/resultat/clientfourn.php
index 71cd33a93cd..54f242edb7c 100644
--- a/htdocs/compta/resultat/clientfourn.php
+++ b/htdocs/compta/resultat/clientfourn.php
@@ -367,7 +367,7 @@ if ($modecompta == 'BOOKKEEPING') {
 					$cpts = $AccCat->getCptsCat(0, $tmppredefinedgroupwhere);
 
 					foreach ($cpts as $j => $cpt) {
-						$return = $AccCat->getSumDebitCredit($cpt['account_number'], $date_start, $date_end, $cpt['dc']);
+						$return = $AccCat->getSumDebitCredit($cpt['account_number'], $date_start, $date_end, (empty($cpt['dc']) ? 0 : $cpt['dc']));
 						if ($return < 0) {
 							setEventMessages(null, $AccCat->errors, 'errors');
 							$resultN = 0;
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index b383a6eb7c2..417295cb116 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -998,7 +998,7 @@ if (!defined('NOLOGIN')) {
 			$hookmanager->initHooks(array('main'));
 
 			// Code for search criteria persistence.
-			if (!empty($_GET['save_lastsearch_values'])) {    // We must use $_GET here
+			if (!empty($_GET['save_lastsearch_values']) && !empty($_SERVER["HTTP_REFERER"])) {    // We must use $_GET here
 				$relativepathstring = preg_replace('/\?.*$/', '', $_SERVER["HTTP_REFERER"]);
 				$relativepathstring = preg_replace('/^https?:\/\/[^\/]*/', '', $relativepathstring); // Get full path except host server
 				// Clean $relativepathstring