diff --git a/lib/cronlib.php b/lib/cronlib.php
index 1701966c5b6..22cef4cde3a 100644
--- a/lib/cronlib.php
+++ b/lib/cronlib.php
@@ -126,10 +126,6 @@ function cron_run() {
     }
     mtrace('Finished blocks');
 
-    //now do plagiarism checks
-    require_once($CFG->libdir.'/plagiarismlib.php');
-    plagiarism_cron();
-
     mtrace("Starting quiz reports");
     if ($reports = $DB->get_records_select('quiz_reports', "cron > 0 AND ((? - lastcron) > cron)", array($timenow))) {
         foreach ($reports as $report) {
@@ -187,6 +183,10 @@ function cron_run() {
         mtrace('done');
     }
 
+    //now do plagiarism checks
+    require_once($CFG->libdir.'/plagiarismlib.php');
+    plagiarism_cron();
+
 /// Run all core cron jobs, but not every time since they aren't too important.
 /// These don't have a timer to reduce load, so we'll use a random number
 /// to randomly choose the percentage of times we should run these jobs.