diff --git a/mod/assign/lib.php b/mod/assign/lib.php
index a6cdba7f1fc..5ca8423c5c9 100644
--- a/mod/assign/lib.php
+++ b/mod/assign/lib.php
@@ -212,8 +212,8 @@ function assign_print_overview($courses, &$htmlarray) {
     // Do assignment_base::isopen() here without loading the whole thing for speed
     foreach ($assignments as $key => $assignment) {
         $time = time();
-        $isopen = $assignment->allowsubmissionsfromdate <= $time;
         if ($assignment->duedate) {
+            $isopen = $assignment->allowsubmissionsfromdate <= $time;
             if ($assignment->preventlatesubmissions) {
                 $isopen = ($isopen && $time <= $assignment->duedate);
             }