diff --git a/tests/AssertTest.php b/tests/AssertTest.php
index f0ec064d..97cce290 100644
--- a/tests/AssertTest.php
+++ b/tests/AssertTest.php
@@ -522,6 +522,7 @@ public static function getTests(): array
             ['propertyExists', [(object) ['property' => null], 'foo'], false],
             ['propertyNotExists', [(object) ['property' => 0], 'property'], false],
             ['propertyNotExists', [(object) ['property' => null], 'property'], false],
+            ['propertyNotExists', [(object) ['property' => null], 'foo'], true],
             ['methodExists', ['RuntimeException', 'getMessage'], true],
             ['methodExists', [new RuntimeException(), 'getMessage'], true],
             ['methodExists', ['stdClass', 'getMessage'], false],