diff --git a/enrol/locallib.php b/enrol/locallib.php
index 1c71e657ad9..30c9db8d1d7 100644
--- a/enrol/locallib.php
+++ b/enrol/locallib.php
@@ -863,7 +863,8 @@ class course_enrolment_manager {
                     $period = get_string('periodend', 'enrol', userdate($ue->timeend));
                     $periodoutside = ($ue->timeend && $now > $ue->timeend);
                 } else {
-                    $period = '';
+                    // If there is no start or end show when user was enrolled.
+                    $period = get_string('periodnone', 'enrol', userdate($ue->timecreated));
                     $periodoutside = false;
                 }
                 $details['enrolments'][$ue->id] = array(
diff --git a/lang/en/enrol.php b/lang/en/enrol.php
index f4709453e63..e0ac6908770 100644
--- a/lang/en/enrol.php
+++ b/lang/en/enrol.php
@@ -80,6 +80,7 @@ $string['participationactive'] = 'Active';
 $string['participationstatus'] = 'Status';
 $string['participationsuspended'] = 'Suspended';
 $string['periodend'] = 'until {$a}';
+$string['periodnone'] = 'enrolled {$a}';
 $string['periodstart'] = 'from {$a}';
 $string['periodstartend'] = 'from {$a->start} until {$a->end}';
 $string['recovergrades'] = 'Recover user\'s old grades if possible';