diff --git a/reference/mongodb/bson/binary/construct.xml b/reference/mongodb/bson/binary/construct.xml
index 97a3c30f53..d94ed67b5c 100644
--- a/reference/mongodb/bson/binary/construct.xml
+++ b/reference/mongodb/bson/binary/construct.xml
@@ -33,7 +33,7 @@
     <term><parameter>type</parameter> (<type>integer</type>)</term>
     <listitem>
      <para>
-      Binary type.
+      Unsigned 8-bit integer denoting the data&apos;s type.
      </para>
     </listitem>
    </varlistentry>
@@ -44,9 +44,37 @@
   &reftitle.errors;
   <simplelist>
    &mongodb.throws.argumentparsing;
+   <member>Throws <classname>MongoDB\Driver\Exception\InvalidArgumentException</classname> if <parameter>type</parameter> is not an unsigned 8-bit integer.</member>
   </simplelist>
  </refsect1>
 
+ <refsect1 role="changelog">
+  &reftitle.changelog;
+  <para>
+   <informaltable>
+    <tgroup cols="2">
+     <thead>
+      <row>
+       <entry>&Version;</entry>
+       <entry>&Description;</entry>
+      </row>
+     </thead>
+     <tbody>
+      <row>
+       <entry>1.1.3</entry>
+       <entry>
+        <para>
+         <classname>MongoDB\Driver\Exception\InvalidArgumentException</classname>
+         is thrown if <parameter>type</parameter> is not an unsigned 8-bit
+         integer.
+        </para>
+       </entry>
+      </row>
+     </tbody>
+    </tgroup>
+   </informaltable>
+  </para>
+ </refsect1>
 
  <refsect1 role="examples">
   &reftitle.examples;