diff --git a/mod/assign/submission/file/locallib.php b/mod/assign/submission/file/locallib.php
index a4153dd95f6..611a5ebfca6 100644
--- a/mod/assign/submission/file/locallib.php
+++ b/mod/assign/submission/file/locallib.php
@@ -320,6 +320,12 @@ class assign_submission_file extends assign_submission_plugin {
                                'assignsubmission_file',
                                ASSIGNSUBMISSION_FILE_FILEAREA,
                                $submission->id);
+
+        global $DB;
+        $currentsubmission = $this->get_file_submission($submission->id);
+        $currentsubmission->numfiles = 0;
+        $DB->update_record('assignsubmission_file', $currentsubmission);
+
         return true;
     }