diff --git a/index.bs b/index.bs
index df27eca..8864e18 100644
--- a/index.bs
+++ b/index.bs
@@ -4906,7 +4906,7 @@ bluetooth.BluetoothManufacturerData = { key: uint, data: tstr };
   <dd>is the Company Identifier Code.</dd>
 
   <dt><code>data</code></dt>
-  <dd>is the [=forgiving-base64 encoded=] result of the manufacturer data [=byte sequence=].</dd>
+  <dd>is the manufacturer data [=byte sequence=], base64 encoded.</dd>
 </dl>
 
 ## The bluetooth module ## {#bluetooth-module}
@@ -5017,7 +5017,7 @@ A `bluetooth.ScanRecord` represents data of the advertisement packet sent by a [
   <dd>is an <a>Appearance</a>, one of the values defined by the {{gap.appearance}} characteristic.</dd>
 
   <dt><code>manufacturerData</code></dt>
-  <dd>list of <code>BluetoothManufacturerData</code> that maps {{unsigned short}} Company Identifier Codes to [=forgiving-base64 encoded=] result of manufacturer data [=byte sequences=].</dd>
+  <dd>list of <code>BluetoothManufacturerData</code> that maps {{unsigned short}} Company Identifier Codes to base64 encoded manufacturer data [=byte sequences=].</dd>
 </dl>
 
 
@@ -5168,7 +5168,7 @@ The [=remote end steps=] with command parameters |params| are:
 1. Let |simulatedBluetoothDevice| be a new [=simulated Bluetooth device=].
 1. Set |simulatedBluetoothDevice|'s name to |params|[`"name"`].
 1. Set |simulatedBluetoothDevice|'s address to |params|[`"address"`].
-1. Set |simulatedBluetoothDevice|'s <a>manufacturer specific data</a> to |params|[`"manufacturerData"`].
+1. Set |simulatedBluetoothDevice|'s <a>manufacturer specific data</a> to the output of [=forgiving-base64 decode=] performed on |params|[`"manufacturerData"`].
 1. Set |simulatedBluetoothDevice|'s <a>service UUIDs</a> to |params|[`"knownServiceUuids"`].
 1. Set |deviceMapping|[|deviceAddress|] to |simulatedBluetoothDevice|.
 1. Return [=success=] with data `null`.