diff --git a/test/wpt/status/streams.json b/test/wpt/status/streams.json
index 92be166791757e..3471a987e834a2 100644
--- a/test/wpt/status/streams.json
+++ b/test/wpt/status/streams.json
@@ -11,6 +11,7 @@
   },
   "piping/general-addition.any.js": {
     "fail": {
+      "note": "Blocked on https://github.com/whatwg/streams/issues/1243",
       "expected": [
         "enqueue() must not synchronously call write algorithm"
       ]