diff --git a/CRM/Member/BAO/MembershipType.php b/CRM/Member/BAO/MembershipType.php
index fcc5597e75b8..195e3d13826e 100644
--- a/CRM/Member/BAO/MembershipType.php
+++ b/CRM/Member/BAO/MembershipType.php
@@ -454,7 +454,7 @@ public static function getDatesForMembershipType($membershipTypeId, $joinDate =
    * @param string $actualStartDate
    * @return bool is this in the window where the membership gets an extra part-period added
    */
-  protected static function isDuringFixedAnnualRolloverPeriod($startDate, $membershipTypeDetails, $year, $actualStartDate) {
+  public static function isDuringFixedAnnualRolloverPeriod($startDate, $membershipTypeDetails, $year, $actualStartDate) {
 
     $rolloverMonth = substr($membershipTypeDetails['fixed_period_rollover_day'], 0,
       strlen($membershipTypeDetails['fixed_period_rollover_day']) - 2
diff --git a/tests/phpunit/api/v3/MembershipTest.php b/tests/phpunit/api/v3/MembershipTest.php
index 85ad37b7a01a..47be4355b9a4 100644
--- a/tests/phpunit/api/v3/MembershipTest.php
+++ b/tests/phpunit/api/v3/MembershipTest.php
@@ -1150,14 +1150,25 @@ public function testMembershipJoinDateFixed() {
     );
     $result = $this->callAPISuccess('Membership', 'create', $memParams);
 
+    // Extend duration interval if join_date exceeds the rollover period.
+    $joinDate = date('Y-m-d');
+    $year = date('Y');
+    $startDate = date('Y-m-d', strtotime(date('Y-03-01')));
+    $membershipTypeDetails = CRM_Member_BAO_MembershipType::getMembershipTypeDetails($this->_membershipTypeID2);
+    $fixedPeriodRollover = CRM_Member_BAO_MembershipType::isDuringFixedAnnualRolloverPeriod($joinDate, $membershipTypeDetails, $year, $startDate);
+    $y = 1;
+    if ($fixedPeriodRollover) {
+      $y += 1;
+    }
+
     $expectedDates = array(
       'join_date' => date('Ymd'),
-      'start_date' => date('Ymd', strtotime(date('Y-03-01'))),
-      'end_date' => date('Ymd', strtotime(date('Y-03-01') . '+ 1 year - 1 day')),
+      'start_date' => str_replace('-', '', $startDate),
+      'end_date' => date('Ymd', strtotime(date('Y-03-01') . "+ {$y} year - 1 day")),
     );
     foreach ($result['values'] as $values) {
       foreach ($expectedDates as $date => $val) {
-        $this->assertEquals($val, $values[$date]);
+        $this->assertEquals($val, $values[$date], "Failed asserting {$date} values");
       }
     }
   }