diff --git a/src/Bundle/ChillThirdPartyBundle/Controller/ThirdpartyDuplicateController.php b/src/Bundle/ChillThirdPartyBundle/Controller/ThirdpartyDuplicateController.php
index 56967a9ce..0c27d13ff 100644
--- a/src/Bundle/ChillThirdPartyBundle/Controller/ThirdpartyDuplicateController.php
+++ b/src/Bundle/ChillThirdPartyBundle/Controller/ThirdpartyDuplicateController.php
@@ -101,7 +101,7 @@ class ThirdpartyDuplicateController extends AbstractController
         }
     }
 
-    private function validateThirdpartyMerge(Thirdparty $thirdparty1, Thirdparty $thirdparty2): void
+    private function validateThirdpartyMerge(ThirdParty $thirdparty1, ThirdParty $thirdparty2): void
     {
         $constraints = [
             [$thirdparty1 === $thirdparty2, 'thirdparty_duplicate.You cannot merge a thirdparty with itself. Please choose a different thirdparty'],
diff --git a/src/Bundle/ChillThirdPartyBundle/Service/ThirdpartyMergeService.php b/src/Bundle/ChillThirdPartyBundle/Service/ThirdpartyMergeService.php
index 89412e5f6..d779cccb8 100644
--- a/src/Bundle/ChillThirdPartyBundle/Service/ThirdpartyMergeService.php
+++ b/src/Bundle/ChillThirdPartyBundle/Service/ThirdpartyMergeService.php
@@ -85,8 +85,8 @@ class ThirdpartyMergeService
                 if (ThirdParty::class !== $assoc['targetEntity'] && ThirdParty::class !== $assoc['sourceEntity']) {
                     continue;
                 }
-
-                if ($assoc['type'] & ClassMetadata::TO_ONE) {
+                // phpstan wants boolean for if condition
+                if (($assoc['type'] & ClassMetadata::TO_ONE) !== 0) {
                     $joinColumn = $meta->getSingleAssociationJoinColumnName($assoc['fieldName']);
 
                     if (ThirdParty::class === $assoc['sourceEntity'] && 'parent_id' !== $joinColumn) {