diff --git a/src/references/instructions/client/control/disconnect.xml b/src/references/instructions/client/control/disconnect.xml
index d778beb..3e9f8b8 100644
--- a/src/references/instructions/client/control/disconnect.xml
+++ b/src/references/instructions/client/control/disconnect.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<section xml:id="disconnect-instruction" 
+<section xml:id="client-disconnect-instruction"
     xmlns="http://docbook.org/ns/docbook" version="5.0" xml:lang="en"
     xmlns:xi="http://www.w3.org/2001/XInclude">
     <title>disconnect</title>
diff --git a/src/references/instructions/server/control/disconnect.xml b/src/references/instructions/server/control/disconnect.xml
new file mode 100644
index 0000000..7cca158
--- /dev/null
+++ b/src/references/instructions/server/control/disconnect.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<section xml:id="server-disconnect-instruction" xmlns="http://docbook.org/ns/docbook" version="5.0"
+    xml:lang="en" xmlns:xi="http://www.w3.org/2001/XInclude">
+    <title>disconnect</title>
+    <indexterm>
+        <primary>disconnect</primary>
+    </indexterm>
+    <para>Notifies the client that the connection is about to be closed by the server. This message
+        can be sent by the server during any phase, and takes no parameters.</para>
+</section>
diff --git a/src/references/protocol.xml b/src/references/protocol.xml
index cb1116b..690023b 100644
--- a/src/references/protocol.xml
+++ b/src/references/protocol.xml
@@ -107,6 +107,7 @@
             <primary>server instructions</primary>
             <secondary>control</secondary>
         </indexterm>
+        <xi:include href="instructions/server/control/disconnect.xml"/>
         <xi:include href="instructions/server/control/error.xml"/>
         <xi:include href="instructions/server/control/log.xml"/>
         <xi:include href="instructions/server/control/nop.xml"/>