diff --git a/reference/memcache/memcache/addserver.xml b/reference/memcache/memcache/addserver.xml
index 2b1c3c5f4d..df64029f4b 100644
--- a/reference/memcache/memcache/addserver.xml
+++ b/reference/memcache/memcache/addserver.xml
@@ -75,6 +75,12 @@
        Set this
        parameter to <literal>0</literal> when using UNIX domain sockets.
       </para>
+      <para>
+       Please note: <parameter>port</parameter> defaults to
+       <link linkend="ini.memcache.default-port">memcache.default_port</link>
+       if not specified. For this reason it is wise to specify the port
+       explicitly in this method call.
+      </para>
      </listitem>
     </varlistentry>
     <varlistentry>
diff --git a/reference/memcache/memcache/connect.xml b/reference/memcache/memcache/connect.xml
index 22de39f2ab..b0e76699e3 100644
--- a/reference/memcache/memcache/connect.xml
+++ b/reference/memcache/memcache/connect.xml
@@ -49,6 +49,12 @@
        Point to the port where memcached is listening for connections. Set this
        parameter to <literal>0</literal> when using UNIX domain sockets.
       </para>
+      <para>
+        Please note: <parameter>port</parameter> defaults to
+        <link linkend="ini.memcache.default-port">memcache.default_port</link>
+        if not specified. For this reason it is wise to specify the port
+        explicitly in this method call.
+      </para>
      </listitem>
     </varlistentry>
     <varlistentry>