diff --git a/manual/xml/mackie.xml b/manual/xml/mackie.xml
index e02158f6f3..da9b6aafeb 100644
--- a/manual/xml/mackie.xml
+++ b/manual/xml/mackie.xml
@@ -6,6 +6,9 @@
 
 <section id="sn-mackie">
   <title>Using the Mackie driver for MCU and BCF2000</title>
+  <para>
+		Note: Mackie support is available only for ardour 2.0 beta12 or newer.
+	</para>
   <para>
     This will walk you through the process of configuring and using Mackie
     MCU, or a BCF2000 in