diff --git a/functions/bc.xml b/functions/bc.xml
index 4e77fc3c82..61e5e1afee 100644
--- a/functions/bc.xml
+++ b/functions/bc.xml
@@ -3,10 +3,18 @@
   <titleabbrev>BC math</titleabbrev>
 
   <partintro>
-   <simpara>
+   <para>
     These functions are only available if PHP was configured with
     <option role="configure">--enable-bcmath</option>.
-   </simpara>
+   </para>
+   <note>
+    <para>
+     Due to changes in the licensing, the BC library is distributed
+     separate from the standard PHP source distribution. Read the
+     information in <literal>README.BCMATH</literal> for instructions
+     on getting the library.
+    </para>
+   </note>
   </partintro>
 
   <refentry id="function.bcadd">