diff --git a/tests/lib_test.php b/tests/lib_test.php
index 87d5a2f8..8dc89b3e 100644
--- a/tests/lib_test.php
+++ b/tests/lib_test.php
@@ -226,6 +226,6 @@ public function test_plagiarism_set_config() {
         // Get the config.
         $config = $plagiarismturnitin->plagiarism_turnitin_admin_config();
 
-        $this->assertObjectNotHasAttribute("plagiarism_turnitin_test", $config);
+        $this->assertObjectNotHasProperty("plagiarism_turnitin_test", $config);
     }
 }
\ No newline at end of file