diff --git a/src/Analysers/AttributeAnnotationFactory.php b/src/Analysers/AttributeAnnotationFactory.php
index f4f8743f..c158e78a 100644
--- a/src/Analysers/AttributeAnnotationFactory.php
+++ b/src/Analysers/AttributeAnnotationFactory.php
@@ -133,7 +133,7 @@ public function build(\Reflector $reflector, Context $context): array
 
             // Attachables can always be nested (unless explicitly restricted)
             return ($isAttachable && $isParentAllowed)
-                || ($annotation->getRoot() != $possibleParent->getRoot() && $explicitParent);
+                || ($annotation->getRoot() !== $possibleParent->getRoot() && $explicitParent);
         };
 
         $annotationsWithoutParent = [];