diff --git a/htdocs/compta/facture.php b/htdocs/compta/facture.php
index 4b82485e8d3..57a36bdbe87 100644
--- a/htdocs/compta/facture.php
+++ b/htdocs/compta/facture.php
@@ -605,7 +605,11 @@ if ($_REQUEST['action'] == 'builddoc')	// En get ou en post
 {
 	$outputlangs = new Translate(DOL_DOCUMENT_ROOT ."/langs");
 	$outputlangs->setDefaultLang($_REQUEST['lang_id']);
-	facture_pdf_create($db, $_REQUEST['facid'], '', '', $outputlangs);
+	$result=facture_pdf_create($db, $_REQUEST['facid'], '', '', $outputlangs);
+    if ($result <= 0)
+    {
+        exit;
+    }    
 }
 
 /*********************************************************************
diff --git a/htdocs/includes/modules/facture/modules_facture.php b/htdocs/includes/modules/facture/modules_facture.php
index 2b49381157d..b95103ec140 100644
--- a/htdocs/includes/modules/facture/modules_facture.php
+++ b/htdocs/includes/modules/facture/modules_facture.php
@@ -141,7 +141,7 @@ class ModeleNumRefFactures
 		\param	    message			message
 		\param	    modele			force le modele à utiliser ('' par defaut)
 		\param		outputlangs		objet lang a utiliser pour traduction
-		\return  	int        		0 si KO, 1 si OK
+		\return  	int        		<0 si KO, >0 si OK
 */
 function facture_pdf_create($db, $id, $message='', $modele='', $outputlangs='')
 {
@@ -186,16 +186,16 @@ function facture_pdf_create($db, $id, $message='', $modele='', $outputlangs='')
 		}
 		else
 		{
-			dolibarr_syslog("Erreur dans facture_pdf_create");
-			dolibarr_print_error($db,$obj->pdferror());
-			return 0;
+			dolibarr_print_error('',"facture_pdf_create Error: ".$obj->error);
+            $this->error=$langs->trans("Error")." ".$obj->error;			
+			return -1;
 		}
 
 	}
 	else
 	{
-		print $langs->trans("Error")." ".$langs->trans("ErrorFileDoesNotExists",$dir.$file);
-		return 0;
+        dolibarr_print_error('',$langs->trans("Error")." ".$langs->trans("ErrorFileDoesNotExists",$dir.$file));
+		return -1;
 	}
 }
 
diff --git a/htdocs/lib/functions.inc.php b/htdocs/lib/functions.inc.php
index fab5ef48cdd..a4e32a6a434 100644
--- a/htdocs/lib/functions.inc.php
+++ b/htdocs/lib/functions.inc.php
@@ -1095,7 +1095,7 @@ function dolibarr_print_error($db='',$msg='')
         $syslog.="pid=".getmypid();
     }
     
-    if ($db)
+    if (is_object($db))
     {
         if ($_SERVER['DOCUMENT_ROOT'])  // Mode web
         {