diff --git a/extensions/fetch/11_streams.js b/extensions/fetch/11_streams.js
index 8bbf348988..80929f65e4 100644
--- a/extensions/fetch/11_streams.js
+++ b/extensions/fetch/11_streams.js
@@ -3881,5 +3881,7 @@
     TransformStream,
     WritableStream,
     WritableStreamDefaultWriter,
+    ReadableByteStreamController,
+    TransformStreamDefaultController,
   };
 })(this);
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index e1c474c282..f98c4973e5 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -289,6 +289,12 @@ delete Object.prototype.__proto__;
     WritableStreamDefaultWriter: util.nonEnumerable(
       streams.WritableStreamDefaultWriter,
     ),
+    ReadableByteStreamController: util.nonEnumerable(
+      streams.ReadableByteStreamController,
+    ),
+    TransformStreamDefaultController: util.nonEnumerable(
+      streams.TransformStreamDefaultController,
+    ),
     atob: util.writable(atob),
     btoa: util.writable(btoa),
     clearInterval: util.writable(timers.clearInterval),
diff --git a/tools/wpt/expectation.json b/tools/wpt/expectation.json
index dd5f9d3b6b..dc15096c78 100644
--- a/tools/wpt/expectation.json
+++ b/tools/wpt/expectation.json
@@ -370,18 +370,11 @@
       "ReadableStreamDefaultController interface: operation error(optional any)",
       "ReadableStreamDefaultController must be primary interface of self.readableStreamDefaultController",
       "Stringification of self.readableStreamDefaultController",
-      "ReadableByteStreamController interface: existence and properties of interface object",
-      "ReadableByteStreamController interface object length",
-      "ReadableByteStreamController interface object name",
-      "ReadableByteStreamController interface: existence and properties of interface prototype object",
-      "ReadableByteStreamController interface: existence and properties of interface prototype object's \"constructor\" property",
-      "ReadableByteStreamController interface: existence and properties of interface prototype object's @@unscopables property",
       "ReadableByteStreamController interface: attribute byobRequest",
       "ReadableByteStreamController interface: attribute desiredSize",
       "ReadableByteStreamController interface: operation close()",
       "ReadableByteStreamController interface: operation enqueue(ArrayBufferView)",
       "ReadableByteStreamController interface: operation error(optional any)",
-      "ReadableByteStreamController must be primary interface of self.readableByteStreamController",
       "Stringification of self.readableByteStreamController",
       "ReadableByteStreamController interface: self.readableByteStreamController must inherit property \"byobRequest\" with the proper type",
       "ReadableStreamBYOBRequest interface: existence and properties of interface object",
@@ -425,17 +418,10 @@
       "TransformStream interface: attribute readable",
       "TransformStream interface: attribute writable",
       "Stringification of new TransformStream()",
-      "TransformStreamDefaultController interface: existence and properties of interface object",
-      "TransformStreamDefaultController interface object length",
-      "TransformStreamDefaultController interface object name",
-      "TransformStreamDefaultController interface: existence and properties of interface prototype object",
-      "TransformStreamDefaultController interface: existence and properties of interface prototype object's \"constructor\" property",
-      "TransformStreamDefaultController interface: existence and properties of interface prototype object's @@unscopables property",
       "TransformStreamDefaultController interface: attribute desiredSize",
       "TransformStreamDefaultController interface: operation enqueue(optional any)",
       "TransformStreamDefaultController interface: operation error(optional any)",
       "TransformStreamDefaultController interface: operation terminate()",
-      "TransformStreamDefaultController must be primary interface of self.transformStreamDefaultController",
       "Stringification of self.transformStreamDefaultController",
       "ByteLengthQueuingStrategy interface: attribute highWaterMark",
       "ByteLengthQueuingStrategy interface: attribute size",