diff --git a/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp b/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp
index 22d800e1e6..6adbec5317 100644
--- a/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp
+++ b/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp
@@ -6,6 +6,7 @@
  */
 
 #include <LibJS/Runtime/PromiseCapability.h>
+#include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Streams/AbstractOperations.h>
 #include <LibWeb/Streams/ReadableStream.h>
 #include <LibWeb/Streams/ReadableStreamBYOBReader.h>
@@ -19,6 +20,12 @@ ReadableStreamBYOBReader::ReadableStreamBYOBReader(JS::Realm& realm)
 {
 }
 
+void ReadableStreamBYOBReader::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::ReadableStreamBYOBReaderPrototype>(realm, "ReadableStreamBYOBReader"));
+}
+
 // https://streams.spec.whatwg.org/#byob-reader-constructor
 WebIDL::ExceptionOr<JS::NonnullGCPtr<ReadableStreamBYOBReader>> ReadableStreamBYOBReader::construct_impl(JS::Realm& realm, JS::NonnullGCPtr<ReadableStream> stream)
 {
diff --git a/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.h b/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.h
index 1881f5e1e8..7bb973e5da 100644
--- a/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.h
+++ b/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
+ * Copyright (c) 2023, Shannon Booth <shannon@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -50,6 +51,8 @@ public:
 private:
     explicit ReadableStreamBYOBReader(JS::Realm&);
 
+    virtual void initialize(JS::Realm&) override;
+
     virtual void visit_edges(Cell::Visitor&) override;
 
     // https://streams.spec.whatwg.org/#readablestreambyobreader-readintorequests