diff --git a/extensions/web/06_streams.js b/extensions/web/06_streams.js
index b24ab21a05..be5eca6bad 100644
--- a/extensions/web/06_streams.js
+++ b/extensions/web/06_streams.js
@@ -2808,7 +2808,7 @@
   function writableStreamHasOperationMarkedInFlight(stream) {
     if (
       stream[_inFlightWriteRequest] === undefined &&
-      stream[_controller][_inFlightCloseRequest] === undefined
+      stream[_inFlightCloseRequest] === undefined
     ) {
       return false;
     }
@@ -2857,11 +2857,11 @@
     assert(stream[_storedError] === undefined);
     assert(stream[_state] === "writable");
     const controller = stream[_controller];
-    assert(controller);
+    assert(controller !== undefined);
     stream[_state] = "erroring";
     stream[_storedError] = reason;
     const writer = stream[_writer];
-    if (writer) {
+    if (writer !== undefined) {
       writableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);
     }
     if (
diff --git a/tools/wpt/expectation.json b/tools/wpt/expectation.json
index 44b19cd5b7..8a78f0a35a 100644
--- a/tools/wpt/expectation.json
+++ b/tools/wpt/expectation.json
@@ -309,11 +309,6 @@
     "queuing-strategies.any.html": true,
     "readable-byte-streams": {
       "bad-buffers-and-views.any.html": [
-        "ReadableStream with byte source: read()ing from a closed stream still transfers the buffer",
-        "ReadableStream with byte source: read()ing from a stream with queued chunks still transfers the buffer",
-        "ReadableStream with byte source: reading into an already-detached buffer rejects",
-        "ReadableStream with byte source: reading into a zero-length buffer rejects",
-        "ReadableStream with byte source: reading into a zero-length view on a non-zero-length buffer rejects",
         "ReadableStream with byte source: respond() throws if the BYOB request's buffer has been detached (in the readable state)",
         "ReadableStream with byte source: respond() throws if the BYOB request's buffer has been detached (in the closed state)",
         "ReadableStream with byte source: respondWithNewView() throws if the supplied view's buffer has been detached (in the readable state)",
@@ -326,7 +321,12 @@
         "ReadableStream with byte source: respondWithNewView() throws if the supplied view is non-zero-length (in the closed state)",
         "ReadableStream with byte source: respondWithNewView() throws if the supplied view's buffer has a different length (in the closed state)",
         "ReadableStream with byte source: enqueue() throws if the BYOB request's buffer has been detached (in the readable state)",
-        "ReadableStream with byte source: enqueue() throws if the BYOB request's buffer has been detached (in the closed state)"
+        "ReadableStream with byte source: enqueue() throws if the BYOB request's buffer has been detached (in the closed state)",
+        "ReadableStream with byte source: read()ing from a closed stream still transfers the buffer",
+        "ReadableStream with byte source: read()ing from a stream with queued chunks still transfers the buffer",
+        "ReadableStream with byte source: reading into an already-detached buffer rejects",
+        "ReadableStream with byte source: reading into a zero-length buffer rejects",
+        "ReadableStream with byte source: reading into a zero-length view on a non-zero-length buffer rejects"
       ],
       "construct-byob-request.any.html": false,
       "general.any.html": [
@@ -424,16 +424,16 @@
       "properties.any.html": true,
       "reentrant-strategies.any.html": true,
       "strategies.any.html": true,
-      "terminate.any.html": [
-        "controller.terminate() inside flush() should not prevent writer.close() from succeeding"
-      ]
+      "terminate.any.html": true
     },
     "writable-streams": {
-      "aborting.any.html": false,
+      "aborting.any.html": true,
       "bad-strategies.any.html": true,
       "bad-underlying-sinks.any.html": true,
       "byte-length-queuing-strategy.any.html": true,
-      "close.any.html": false,
+      "close.any.html": [
+        "when close is called on a WritableStream in waiting state, ready should be fulfilled immediately even if close takes a long time"
+      ],
       "constructor.any.html": true,
       "count-queuing-strategy.any.html": true,
       "error.any.html": true,