diff --git a/enrol/fee/classes/plugin.php b/enrol/fee/classes/plugin.php
index b1c5220ce53..0e01c4e7251 100644
--- a/enrol/fee/classes/plugin.php
+++ b/enrol/fee/classes/plugin.php
@@ -206,9 +206,10 @@ class enrol_fee_plugin extends enrol_plugin {
                 echo '<p><a href="'.$wwwroot.'/login/">'.get_string('loginsite').'</a></p>';
                 echo '</div>';
             } else {
+                $coursefullname  = format_string($course->fullname, true, ['context' => $context]);
                 \core_payment\helper::gateways_modal_requirejs();
                 $attributes = core_payment\helper::gateways_modal_link_params($cost, $instance->currency, 'enrol_fee',
-                        $instance->id);
+                        $instance->id, get_string('purchasedescription', 'enrol_fee', $coursefullname));
 
                 echo '<div align="center">' .
                       html_writer::tag('button', get_string("sendpaymentbutton", "enrol_paypal"), $attributes) .
diff --git a/enrol/fee/lang/en/enrol_fee.php b/enrol/fee/lang/en/enrol_fee.php
index a46e275b1ed..dc97e9964a0 100644
--- a/enrol/fee/lang/en/enrol_fee.php
+++ b/enrol/fee/lang/en/enrol_fee.php
@@ -45,6 +45,7 @@ $string['fee:unenrolself'] = 'Unenrol self from course';
 $string['nocost'] = 'There is no cost to enrol in this course!';
 $string['pluginname'] = 'Enrolment on payment';
 $string['pluginname_desc'] = 'The enrolment on payment enrolment method allows you to set up courses requiring a payment. If the fee for any course is set to zero, then students are not asked to pay for entry. There is a site-wide fee that you set here as a default for the whole site and then a course setting that you can set for each course individually. The course fee overrides the site fee.';
+$string['purchasedescription'] = 'Enrolment in course {$a}';
 $string['sendpaymentbutton'] = 'Select payment type';
 $string['status'] = 'Allow enrolment on payment enrolments';
 $string['status_desc'] = 'Allow users to make a payment to enrol into a course by default.';