diff --git a/reference/mongo/mongogridfs/storefile.xml b/reference/mongo/mongogridfs/storefile.xml
index 0f0f1300cf..0085c17c15 100644
--- a/reference/mongo/mongogridfs/storefile.xml
+++ b/reference/mongo/mongogridfs/storefile.xml
@@ -11,7 +11,7 @@
   &reftitle.description;
   <methodsynopsis>
    <modifier>public</modifier> <type>mixed</type><methodname>MongoGridFS::storeFile</methodname>
-   <methodparam><type>string</type><parameter>filename</parameter></methodparam>
+   <methodparam><type>string|resource</type><parameter>filename</parameter></methodparam>
    <methodparam choice="opt"><type>array</type><parameter>metadata</parameter><initializer>array()</initializer></methodparam>
    <methodparam choice="opt"><type>array</type><parameter>options</parameter><initializer>array()</initializer></methodparam>
   </methodsynopsis>
@@ -27,7 +27,7 @@
      </term>
      <listitem>
       <para>
-       Name of the file to store.
+       Name of the file or a readable stream to store.
       </para>
      </listitem>
     </varlistentry>