diff --git a/mod/assign/locallib.php b/mod/assign/locallib.php
index ca80044b73a..3c9a70622e7 100644
--- a/mod/assign/locallib.php
+++ b/mod/assign/locallib.php
@@ -2590,6 +2590,9 @@ class assign {
         // More efficient to load this here.
         require_once($CFG->libdir.'/filelib.php');
 
+        // Increase the server timeout to handle the creation and sending of large zip files.
+        core_php_time_limit::raise();
+
         $this->require_view_grades();
 
         // Load all users with submit.