diff --git a/mod/assignment/type/upload/assignment.class.php b/mod/assignment/type/upload/assignment.class.php
index 911168b93a7..5546e763d8d 100644
--- a/mod/assignment/type/upload/assignment.class.php
+++ b/mod/assignment/type/upload/assignment.class.php
@@ -53,9 +53,9 @@ class assignment_upload extends assignment_base {
                 echo $OUTPUT->box($this->print_user_files($USER->id, true), 'generalbox boxaligncenter', 'userfiles');
             } else {
                 if (!$this->isopen() or $this->is_finalized($submission)) {
-                    echo $OUTPUT->box(get_string('nofiles', 'assignment'), 'generalbox boxaligncenter', 'userfiles');
+                    echo $OUTPUT->box(get_string('nofiles', 'assignment'), 'generalbox boxaligncenter nofiles', 'userfiles');
                 } else {
-                    echo $OUTPUT->box(get_string('nofilesyet', 'assignment'), 'generalbox boxaligncenter', 'userfiles');
+                    echo $OUTPUT->box(get_string('nofilesyet', 'assignment'), 'generalbox boxaligncenter nofiles', 'userfiles');
                 }
             }