diff --git a/mod/assign/lib.php b/mod/assign/lib.php
index 11ce0b690d1..d48e52740bd 100644
--- a/mod/assign/lib.php
+++ b/mod/assign/lib.php
@@ -906,6 +906,8 @@ function assign_cron() {
             $class::cron();
         }
     }
+
+    return true;
 }
 
 /**
diff --git a/mod/assign/locallib.php b/mod/assign/locallib.php
index e07cb2cd572..4629d71e50e 100644
--- a/mod/assign/locallib.php
+++ b/mod/assign/locallib.php
@@ -1601,7 +1601,7 @@ class assign {
         // Only ever send a max of one days worth of updates.
         $yesterday = time() - (24 * 3600);
         $timenow   = time();
-        $lastcron = $DB->get_field('modules', 'lastcron', array('name'=>'mod_assign'));
+        $lastcron = $DB->get_field('modules', 'lastcron', array('name' => 'assign'));
 
         // Collect all submissions from the past 24 hours that require mailing.
         // Submissions are excluded if the assignment is hidden in the gradebook.