diff --git a/htdocs/core/lib/files.lib.php b/htdocs/core/lib/files.lib.php
index 33fa6e8b09f..13d458f4047 100644
--- a/htdocs/core/lib/files.lib.php
+++ b/htdocs/core/lib/files.lib.php
@@ -1886,17 +1886,32 @@ function dol_check_secure_access_document($modulepart,$original_file,$entity,$fu
 		// Define $accessallowed
 		if (preg_match('/^([a-z]+)_user_temp$/i',$modulepart,$reg))
 		{
-			if ($fuser->rights->{$reg[1]}->lire || $fuser->rights->{$reg[1]}->read || ($fuser->rights->{$reg[1]}->download)) $accessallowed=1;
+			if (empty($conf->{$reg[1]}->dir_temp))	// modulepart not supported
+			{
+				dol_print_error('','Error call dol_check_secure_access_document with not supported value for modulepart parameter ('.$modulepart.')');
+				exit;
+			}
+		    if ($fuser->rights->{$reg[1]}->lire || $fuser->rights->{$reg[1]}->read || ($fuser->rights->{$reg[1]}->download)) $accessallowed=1;
 			$original_file=$conf->{$reg[1]}->dir_temp.'/'.$fuser->id.'/'.$original_file;
 		}
 		else if (preg_match('/^([a-z]+)_temp$/i',$modulepart,$reg))
 		{
-			if ($fuser->rights->{$reg[1]}->lire || $fuser->rights->{$reg[1]}->read || ($fuser->rights->{$reg[1]}->download)) $accessallowed=1;
+			if (empty($conf->{$reg[1]}->dir_temp))	// modulepart not supported
+			{
+				dol_print_error('','Error call dol_check_secure_access_document with not supported value for modulepart parameter ('.$modulepart.')');
+				exit;
+			}
+		    if ($fuser->rights->{$reg[1]}->lire || $fuser->rights->{$reg[1]}->read || ($fuser->rights->{$reg[1]}->download)) $accessallowed=1;
 			$original_file=$conf->{$reg[1]}->dir_temp.'/'.$original_file;
 		}
 		else if (preg_match('/^([a-z]+)_user$/i',$modulepart,$reg))
 		{
-			if ($fuser->rights->{$reg[1]}->lire || $fuser->rights->{$reg[1]}->read || ($fuser->rights->{$reg[1]}->download)) $accessallowed=1;
+			if (empty($conf->{$reg[1]}->dir_output))	// modulepart not supported
+			{
+				dol_print_error('','Error call dol_check_secure_access_document with not supported value for modulepart parameter ('.$modulepart.')');
+				exit;
+			}
+		    if ($fuser->rights->{$reg[1]}->lire || $fuser->rights->{$reg[1]}->read || ($fuser->rights->{$reg[1]}->download)) $accessallowed=1;
 			$original_file=$conf->{$reg[1]}->dir_output.'/'.$fuser->id.'/'.$original_file;
 		}
 		else