diff --git a/source/streamio/classes/form/edit_resource.php b/source/streamio/classes/form/edit_resource.php
index b6d6c82..30e27d0 100644
--- a/source/streamio/classes/form/edit_resource.php
+++ b/source/streamio/classes/form/edit_resource.php
@@ -139,7 +139,7 @@ public function definition_after_data() {
     public function validation($data, $files) {
         $errors = [];
 
-        if (empty($data['newfile']) && empty($data['file'])) {
+        if (empty($data['edit']) && empty($data['newfile']) && empty($data['file'])) {
             $errors['file'] = get_string('required');
         }