diff --git a/amendments.json b/amendments.json
index a160757fb..841277e61 100644
--- a/amendments.json
+++ b/amendments.json
@@ -540,6 +540,13 @@
 	"webrtc/RTCDataChannel-binaryType.window.js"
       ],
       "id": 39
+    },
+    {
+      "description": "Change the default value of binaryType",
+      "pr": 2913,
+      "type": "correction",
+      "status": "candidate",
+      "id": 40
     }
   ]
 }
diff --git a/webrtc.html b/webrtc.html
index 87ef3570e..0f6d137cc 100644
--- a/webrtc.html
+++ b/webrtc.html
@@ -14445,7 +14445,7 @@ <h2>
                   "RTCPeerConnection-createDataChannel.html">When an
                   {{RTCDataChannel}} object is created, the
                   {{binaryType}} attribute MUST be initialized
-                  to the string {{BinaryType/"blob"}}.</span>
+                  to the string {{BinaryType/"arraybuffer"}}.</span>
                 </p>
                 <p>
                   This attribute controls how binary data is exposed to