diff --git a/functions/icap.xml b/functions/icap.xml
index e3b343c55c..232411e196 100644
--- a/functions/icap.xml
+++ b/functions/icap.xml
@@ -1,16 +1,22 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.16 $ -->
+<!-- $Revision: 1.17 $ -->
  <reference id="ref.icap">
-  <title>ICAP Functions</title>
+  <title>ICAP Functions [deprecated]</title>
   <titleabbrev>ICAP</titleabbrev>
-
   <partintro>
    <simpara>
     To get these functions to work, you have to compile PHP with
     <option role="configure">--with-icap</option>. That requires the
-    icap library to be installed. Grab the latest version from <ulink
-    url="&url.icap;">&url.icap;</ulink> and compile and install it.
-   </simpara>
+    icap library to be installed, which is not longer supported and available.
+    </simpara>
+    <note>
+     <simpara>
+      Icap will be removed in near future. Neither this module, nor
+      those versions of icap library are supported any longer. If you
+      want to use calendar capabilites in php, use <link
+      linkend="ref.mcal">mcal</link> instead.
+     </simpara>
+    </note>
   </partintro>
 
   <refentry id="function.icap-open">