diff --git a/http_uri.t b/http_uri.t
index 4df57f9..688e4ff 100644
--- a/http_uri.t
+++ b/http_uri.t
@@ -77,7 +77,7 @@
 	'port args and frag');
 
 TODO: {
-local $TODO = 'not yet';
+local $TODO = 'not yet' unless $t->has_version('1.21.1');
 
 like(http_get('/ /'), qr/400 Bad/, 'space');