diff --git a/tests/classes/bug24445.phpt b/tests/classes/bug24445.phpt
new file mode 100644
index 00000000000..8cc1db54a28
--- /dev/null
+++ b/tests/classes/bug24445.phpt
@@ -0,0 +1,12 @@
+--TEST--
+Bug #24399: get_parent_class() returns the current class when passed an object
+--FILE--
+<?php
+class Test { }
+var_dump(get_parent_class('Test'));
+$t = new Test;
+var_dump(get_parent_class($t));
+?>
+--EXPECT--
+bool(false)
+bool(false)