diff --git a/reference/curl/functions/curl-init.xml b/reference/curl/functions/curl-init.xml
index 615c90c78e..6790293c4c 100644
--- a/reference/curl/functions/curl-init.xml
+++ b/reference/curl/functions/curl-init.xml
@@ -31,6 +31,12 @@
        to its value. You can manually set this using the 
        <function>curl_setopt</function> function.
       </para>
+      <note>
+       <para>
+        The <literal>file</literal> protocol is disabled by cURL if
+        <link linkend="ini.open-basedir">open_basedir</link> is set.
+       </para>
+      </note>
      </listitem>
     </varlistentry>
    </variablelist>