diff --git a/tests/phpunit/api/v4/Service/TestCreationParameterProvider.php b/tests/phpunit/api/v4/Service/TestCreationParameterProvider.php
index da96cec0c402..ee0138a946d7 100644
--- a/tests/phpunit/api/v4/Service/TestCreationParameterProvider.php
+++ b/tests/phpunit/api/v4/Service/TestCreationParameterProvider.php
@@ -53,6 +53,12 @@ public function getRequired($entity) {
     $requiredParams = [];
     foreach ($requiredFields as $requiredField) {
       $value = $this->getRequiredValue($requiredField);
+      if ($entity === 'UFField' && $requiredField->getName() === 'field_name') {
+        // This is a ruthless hack to avoid a unique constraint - but
+        // it's also a test class & hard to care enough to do something
+        // better
+        $value = 'activity_campaign_id';
+      }
       $requiredParams[$requiredField->getName()] = $value;
     }