diff --git a/htdocs/expensereport/card.php b/htdocs/expensereport/card.php
index b711a65d25a..f15f8c74743 100644
--- a/htdocs/expensereport/card.php
+++ b/htdocs/expensereport/card.php
@@ -118,6 +118,7 @@ $permissiontoadd = $user->rights->expensereport->creer; // Used by the include o
 $upload_dir = $conf->expensereport->dir_output.'/'.dol_sanitizeFileName($object->ref);
 
 $projectRequired = $conf->projet->enabled && ! empty($conf->global->EXPENSEREPORT_PROJECT_IS_REQUIRED);
+$fileRequired = !empty($conf->global->EXPENSEREPORT_FILE_IS_REQUIRED);
 
 if ($object->id > 0) {
 	// Check current user can read this expense report
@@ -1157,6 +1158,12 @@ if (empty($reshook)) {
 			setEventMessages($langs->trans("ErrorFieldRequired", $langs->transnoentitiesnoconv("Project")), null, 'errors');
 		}
 
+		// If no file associated
+		if ($fileRequired && $fk_ecm_files == 0) {
+			$error++;
+			setEventMessages($langs->trans("ErrorFieldRequired", $langs->transnoentitiesnoconv("File")), null, 'errors');
+		}
+
 		if (!$error) {
 			$type = 0; // TODO What if service ? We should take the type product/service from the type of expense report llx_c_type_fees