diff --git a/lib/classes/task/portfolio_cron_task.php b/lib/classes/task/portfolio_cron_task.php
index b44d28d51ee..575adcac704 100644
--- a/lib/classes/task/portfolio_cron_task.php
+++ b/lib/classes/task/portfolio_cron_task.php
@@ -42,12 +42,37 @@ class portfolio_cron_task extends scheduled_task {
      * Throw exceptions on errors (the job will be retried).
      */
     public function execute() {
-        global $CFG;
+        global $CFG, $DB;
 
         if ($CFG->enableportfolios) {
             require_once($CFG->libdir . '/portfoliolib.php');
-            portfolio_cron();
+            require_once($CFG->libdir . '/portfolio/exporter.php');
+            if ($expired = $DB->get_records_select('portfolio_tempdata', 'expirytime < ?', [time()], '', 'id')) {
+                foreach ($expired as $tempdata) {
+                    try {
+                        $exporter = \portfolio_exporter::rewaken_object($tempdata->id);
+                        $exporter->process_stage_cleanup(true);
+                    } catch (\Exception $exception) {
+                        mtrace('Exception thrown in portfolio cron while cleaning up ' . $tempdata->id . ': ' .
+                                $exception->getMessage());
+                    }
+                }
+            }
+
+            $process = $DB->get_records('portfolio_tempdata', ['queued' => 1], 'id ASC', 'id');
+            foreach ($process as $tempdata) {
+                try {
+                    $exporter = \portfolio_exporter::rewaken_object($tempdata->id);
+                    $exporter->process_stage_package();
+                    $exporter->process_stage_send();
+                    $exporter->save();
+                    $exporter->process_stage_cleanup();
+                } catch (\Exception $exception) {
+                    // This will get probably retried in the next cron until it is discarded by the code above.
+                    mtrace('Exception thrown in portfolio cron while processing ' . $tempdata->id . ': ' .
+                            $exception->getMessage());
+                }
+            }
         }
     }
-
 }
diff --git a/lib/portfoliolib.php b/lib/portfoliolib.php
index f37d3a2138e..68d5fe500bf 100644
--- a/lib/portfoliolib.php
+++ b/lib/portfoliolib.php
@@ -935,40 +935,6 @@ function portfolio_report_insane($insane, $instances=false, $return=false) {
     echo $output;
 }
 
-/**
- * Main portfolio cronjob.
- * Currently just cleans up expired transfer records.
- */
-function portfolio_cron() {
-    global $DB, $CFG;
-
-    require_once($CFG->libdir . '/portfolio/exporter.php');
-    if ($expired = $DB->get_records_select('portfolio_tempdata', 'expirytime < ?', array(time()), '', 'id')) {
-        foreach ($expired as $d) {
-            try {
-                $e = portfolio_exporter::rewaken_object($d->id);
-                $e->process_stage_cleanup(true);
-            } catch (Exception $e) {
-                mtrace('Exception thrown in portfolio cron while cleaning up ' . $d->id . ': ' . $e->getMessage());
-            }
-        }
-    }
-
-    $process = $DB->get_records('portfolio_tempdata', array('queued' => 1), 'id ASC', 'id');
-    foreach ($process as $d) {
-        try {
-            $exporter = portfolio_exporter::rewaken_object($d->id);
-            $exporter->process_stage_package();
-            $exporter->process_stage_send();
-            $exporter->save();
-            $exporter->process_stage_cleanup();
-        } catch (Exception $e) {
-            // This will get probably retried in the next cron until it is discarded by the code above.
-            mtrace('Exception thrown in portfolio cron while processing ' . $d->id . ': ' . $e->getMessage());
-        }
-    }
-}
-
 /**
  * Helper function to rethrow a caught portfolio_exception as an export exception.
  * Used because when a portfolio_export exception is thrown the export is cancelled
diff --git a/portfolio/upgrade.txt b/portfolio/upgrade.txt
index 49d49937e6c..eda575d1465 100644
--- a/portfolio/upgrade.txt
+++ b/portfolio/upgrade.txt
@@ -1,6 +1,10 @@
 This files describes API changes in /portfolio/ portfolio system,
 information provided here is intended especially for developers.
 
+=== 3.7 ===
+
+* The portfolio_cron() function has been removed. Please use portfolio_cron_task scheduled task instead.
+
 === 3.1 ===
 
 * The following functions, previously used (exclusively) by upgrade steps are not available