diff --git a/tests/phpunit/CRMTraits/Profile/ProfileTrait.php b/tests/phpunit/CRMTraits/Profile/ProfileTrait.php
index b41dbf4a7eb..d6c4d397436 100644
--- a/tests/phpunit/CRMTraits/Profile/ProfileTrait.php
+++ b/tests/phpunit/CRMTraits/Profile/ProfileTrait.php
@@ -40,9 +40,9 @@ trait CRMTraits_Profile_ProfileTrait {
    * @param array $ufGroupParams
    */
   protected function createJoinedProfile($joinParams, $ufGroupParams = []) {
-    $this->createProfile($ufGroupParams);
+    $profileID = $this->createProfile($ufGroupParams);
     $joinParams = array_merge([
-      'uf_group_id' => 'our profile',
+      'uf_group_id' => $profileID,
       'entity_table' => 'civicrm_contribution_page',
       'weight' => 1,
     ], $joinParams);
@@ -59,6 +59,8 @@ protected function createJoinedProfile($joinParams, $ufGroupParams = []) {
    * Create a profile.
    *
    * @param $ufGroupParams
+   *
+   * @return int
    */
   protected function createProfile($ufGroupParams) {
     $profile = $this->callAPISuccess('UFGroup', 'create', array_merge([
@@ -74,6 +76,28 @@ protected function createProfile($ufGroupParams) {
       'uf_group_id' => $profile['id'],
       'field_name' => 'first_name',
     ]);
+    return $profile['id'];
+  }
+
+  /**
+   * Ensure we don't have a profile with the id or one to ensure that we are not casting an array to it.
+   */
+  protected function eliminateUFGroupOne() {
+    $profileID = $this->createProfile(['name' => 'dummy_for_removing']);
+    CRM_Core_DAO::executeQuery("UPDATE civicrm_uf_join SET uf_group_id = $profileID WHERE uf_group_id = 1");
+    CRM_Core_DAO::executeQuery("UPDATE civicrm_uf_field SET uf_group_id = $profileID WHERE uf_group_id = 1");
+    CRM_Core_DAO::executeQuery('UPDATE civicrm_uf_group SET id = 900 WHERE id = 1');
+    $this->ids['UFGroup']['dummy'] = $profileID;
+  }
+
+  /**
+   * Bring back UF group one.
+   */
+  protected function restoreUFGroupOne() {
+    $profileID = $this->ids['UFGroup']['dummy'];
+    CRM_Core_DAO::executeQuery('UPDATE civicrm_uf_group SET id = 1 WHERE id = 900');
+    CRM_Core_DAO::executeQuery("UPDATE civicrm_uf_join SET uf_group_id = 1 WHERE uf_group_id = $profileID");
+    CRM_Core_DAO::executeQuery("UPDATE civicrm_uf_field SET uf_group_id = 1 WHERE uf_group_id = $profileID");
   }
 
 }
diff --git a/tests/phpunit/api/v3/ContributionTest.php b/tests/phpunit/api/v3/ContributionTest.php
index be3c2059ecd..a63b33bb9a4 100644
--- a/tests/phpunit/api/v3/ContributionTest.php
+++ b/tests/phpunit/api/v3/ContributionTest.php
@@ -117,13 +117,15 @@ public function setUp() {
 
   /**
    * Clean up after each test.
+   *
+   * @throws \CRM_Core_Exception
    */
   public function tearDown() {
     $this->quickCleanUpFinancialEntities();
     $this->quickCleanup(['civicrm_uf_match']);
     $financialAccounts = $this->callAPISuccess('FinancialAccount', 'get', []);
     foreach ($financialAccounts['values'] as $financialAccount) {
-      if ($financialAccount['name'] == 'Test Tax financial account ' || $financialAccount['name'] == 'Test taxable financial Type') {
+      if ($financialAccount['name'] === 'Test Tax financial account ' || $financialAccount['name'] === 'Test taxable financial Type') {
         $entityFinancialTypes = $this->callAPISuccess('EntityFinancialAccount', 'get', [
           'financial_account_id' => $financialAccount['id'],
         ]);
@@ -133,6 +135,7 @@ public function tearDown() {
         $this->callAPISuccess('FinancialAccount', 'delete', ['id' => $financialAccount['id']]);
       }
     }
+    $this->restoreUFGroupOne();
   }
 
   /**
@@ -3058,6 +3061,9 @@ public function testCompleteTransactionWithParticipantRecord() {
     $this->_individualId = $this->createLoggedInUser();
     $contributionID = $this->createPendingParticipantContribution();
     $this->createJoinedProfile(['entity_id' => $this->_ids['event']['test'], 'entity_table' => 'civicrm_event']);
+    $this->createJoinedProfile(['entity_id' => $this->_ids['event']['test'], 'entity_table' => 'civicrm_event', 'weight' => 2], ['name' => 'post_1', 'title' => 'title_post_2', 'frontend_title' => 'public 2']);
+    $this->createJoinedProfile(['entity_id' => $this->_ids['event']['test'], 'entity_table' => 'civicrm_event', 'weight' => 3], ['name' => 'post_2', 'title' => 'title_post_3', 'frontend_title' => 'public 3']);
+    $this->eliminateUFGroupOne();
 
     $this->callAPISuccess('contribution', 'completetransaction', [
       'id' => $contributionID,
@@ -3074,7 +3080,7 @@ public function testCompleteTransactionWithParticipantRecord() {
       'contact_id' => $this->_individualId,
     ])['values'];
 
-    $this->assertEquals(3, count($activities));
+    $this->assertCount(3, $activities);
     $activityNames = array_count_values(CRM_Utils_Array::collect('activity_name', $activities));
     // record two activities before and after completing payment for Event registration
     $this->assertEquals(2, $activityNames['Event Registration']);
@@ -3087,7 +3093,9 @@ public function testCompleteTransactionWithParticipantRecord() {
       'This letter is a confirmation that your registration has been received and your status has been updated to Registered.',
       'First Name: Logged In',
       'Public title',
-    ], ['Back end title']);
+      'public 2',
+      'public 3',
+    ], ['Back end title', 'title_post_2', 'title_post_3']);
     $mut->stop();
   }