diff --git a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
index c1ce405437dd..78606db626d2 100644
--- a/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
+++ b/src/Symfony/Component/PropertyInfo/Extractor/ReflectionExtractor.php
@@ -592,7 +592,7 @@ private function isAllowedProperty(string $class, string $property): bool
         try {
             $reflectionProperty = new \ReflectionProperty($class, $property);
 
-            return $reflectionProperty->getModifiers() & $this->propertyReflectionFlags;
+            return (bool) ($reflectionProperty->getModifiers() & $this->propertyReflectionFlags);
         } catch (\ReflectionException $e) {
             // Return false if the property doesn't exist
         }