diff --git a/tests/data/test2033 b/tests/data/test2033
index 62d73b8910..e2307d0620 100644
--- a/tests/data/test2033
+++ b/tests/data/test2033
@@ -6,6 +6,7 @@ HTTP GET
 HTTP Basic auth
 HTTP NTLM auth
 pipelining
+flaky
 </keywords>
 </info>
 # Server-side