diff --git a/service-api/app/src/App/src/Service/Lpa/FindActorInLpa.php b/service-api/app/src/App/src/Service/Lpa/FindActorInLpa.php
index 160371b238..cdfd8d3676 100644
--- a/service-api/app/src/App/src/Service/Lpa/FindActorInLpa.php
+++ b/service-api/app/src/App/src/Service/Lpa/FindActorInLpa.php
@@ -120,7 +120,7 @@ private function checkForActorMatch(ActorMatchingInterface $actor, array $matchD
         $matchData = $this->normaliseComparisonData($matchData);
         $actorData = $this->normaliseComparisonData(
             [
-                'first_names' => $actor->getFirstnames(),
+                'first_names' => $actor->getFirstname(),
                 'last_name'   => $actor->getSurname(),
                 'postcode'    => $actor->getPostcode(),
             ]