# Pastebin yssMUcXA
diff --git a/index.bs b/index.bs
index ae48a25..2714b83 100644
--- a/index.bs
+++ b/index.bs
@@ -1283,6 +1283,8 @@ <h4 id="default-reader-class-definition">Class definition</h4>
     <a href="#default-reader-cancel">cancel</a>(reason)
     <a href="#default-reader-read">read</a>()
     <a href="#default-reader-release-lock">releaseLock</a>()
+
+    <a href="#default-reader-symbol-asynciterator">[Symbol.asyncIterator]</a>()
   }
 </code></pre>

@@ -1402,6 +1404,18 @@ <h5 id="default-reader-release-lock" method for="ReadableStreamDefaultReader">re
   1. Perform ! ReadableStreamReaderGenericRelease(*this*).
 </emu-alg>

+<h5 id="default-reader-symbol-asynciterator" method for="ReadableStreamDefaultReader">[Symbol.asyncIterator]()</h5>
+
+<emu-alg>
+  1. If ! IsReadableStreamDefaultReader(*this*) is *false*, throw a *TypeError* exception.
+  1. If *this*.[[ownerReadableStream]] is *undefined*, throw a *TypeError* exception.
+  1. Repeat,
+    1. Let _iterResult_ be Await ! ReadableStreamDefaultReaderRead(*this*, *true*).
+    1. Perform Yield _iterResult_.
+    1. If ? IteratorComplete(_iterResult_) is *true*, then
+      1. Return _iterResult_.
+</emu-alg>
+
 <h3 id="byob-reader-class" interface lt="ReadableStreamBYOBReader">Class <code>ReadableStreamBYOBReader</code></h3>

 The {{ReadableStreamBYOBReader}} class represents a <a>BYOB reader</a> designed to be vended by a {{ReadableStream}}