diff --git a/testenv/tests/validators/test_kvm.py b/testenv/tests/validators/test_kvm.py
index 2b5844e3..c592b5ac 100644
--- a/testenv/tests/validators/test_kvm.py
+++ b/testenv/tests/validators/test_kvm.py
@@ -115,6 +115,7 @@ def test_fail__valid_stream_fps(arg: Any) -> None:
     (".",                 "_"),
     ("..",                "__"),
     ("/..",               "_.."),
+    ("/..\0",               "_.._"),
     ("/root/..",          "_root_.."),
     (" тест(){}[ \t].iso\t", "тест()__[__].iso"),
     ("?" * 1000,          "_" * 255),