diff --git a/doc/guide/dhcp4-srv.xml b/doc/guide/dhcp4-srv.xml
index a4be35539d..ba0e74f7b5 100644
--- a/doc/guide/dhcp4-srv.xml
+++ b/doc/guide/dhcp4-srv.xml
@@ -2403,12 +2403,17 @@ It is merely echoed by the server
     has to be identified by its hardware/MAC address. There is an optional
     <command>reservations</command> array in the <command>Subnet4</command>
     element. Each element in that array is a structure, that holds information
-    about reservrations for a single host. In particular, such a structure has
+    about reservations for a single host. In particular, such a structure has
     to have an indentifer that uniquely identifies a host.  In DHCPv4 context, such an
     identifier is a hardware or MAC address.  In most cases, also an address
     will be specified. It is possible to specify a hostname. Additional
     capabilities are planned.</para>
 
+    <note><para>In Kea 1.0.0 it is only possible to create host reservations
+    using client's hardware address. Host reservations by client identifier
+    (or DUID) are not supported in this version of Kea. This capability will
+    be implemented in Kea 1.1.0.</para></note>
+
     <para>The following example shows how to reserve addresses for specific
     hosts: