diff --git a/CRM/Member/Form/MembershipType.php b/CRM/Member/Form/MembershipType.php
index 3a5d4926bc93..958e79008c4c 100644
--- a/CRM/Member/Form/MembershipType.php
+++ b/CRM/Member/Form/MembershipType.php
@@ -92,15 +92,18 @@ protected function setEntityFields() {
       ],
       'duration_interval' => [
         'name' => 'duration_interval',
+        'required' => TRUE,
       ],
       'duration_unit' => [
         'name' => 'duration_unit',
         'description' => ts('Duration of this membership (e.g. 30 days, 2 months, 5 years, 1 lifetime)'),
+        'required' => TRUE,
       ],
       'period_type' => [
         'name' => 'period_type',
         'description' => ts("Select 'rolling' if membership periods begin at date of signup. Select 'fixed' if membership periods begin on a set calendar date."),
         'help' => ['id' => 'period-type', 'file' => "CRM/Member/Page/MembershipType.hlp"],
+        'required' => TRUE,
       ],
       'fixed_period_start_day' => [
         'name' => 'fixed_period_start_day',