diff --git a/share/pgpkeys/mdf.key b/share/pgpkeys/mdf.key
new file mode 100644
index 0000000000..87b761ed58
--- /dev/null
+++ b/share/pgpkeys/mdf.key
@@ -0,0 +1,56 @@
+<!-- $FreeBSD$ -->
+<!--
+sh addkey.sh mdf A783DAA2;
+-->
+<programlisting role="pgpfingerprint"><![CDATA[
+pub   2048R/A783DAA2 2012-11-22 [expires: 2016-11-22]
+      Key fingerprint = 773F E069 BE98 CE96 4AC6  B8AB 1A1B 255E A783 DAA2
+uid                  Matthew D Fleming <mdf356@gmail.com>
+uid                  Matthew D Fleming <mdf@FreeBSD.org>
+sub   2048R/4015B7AA 2012-11-22 [expires: 2016-11-22]
+]]></programlisting>
+<programlisting role="pgpkey"><![CDATA[
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+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+=BME2
+-----END PGP PUBLIC KEY BLOCK-----
+]]></programlisting>
diff --git a/share/pgpkeys/pgpkeys-developers.xml b/share/pgpkeys/pgpkeys-developers.xml
index e5f8b16c7d..1163f8673e 100644
--- a/share/pgpkeys/pgpkeys-developers.xml
+++ b/share/pgpkeys/pgpkeys-developers.xml
@@ -486,6 +486,11 @@
       &pgpkey.lioux;
     </sect2>
 
+    <sect2 id="pgpkey-mdf">
+      <title>&a.mdf;</title>
+      &pgpkey.mdf;
+    </sect2>
+
     <sect2 id="pgpkey-fanf">
       <title>&a.fanf;</title>
       &pgpkey.fanf;
diff --git a/share/pgpkeys/pgpkeys.ent b/share/pgpkeys/pgpkeys.ent
index 4b6d90c255..75817da4a8 100644
--- a/share/pgpkeys/pgpkeys.ent
+++ b/share/pgpkeys/pgpkeys.ent
@@ -238,6 +238,7 @@
 <!ENTITY pgpkey.max SYSTEM "max.key">
 <!ENTITY pgpkey.maxim SYSTEM "maxim.key">
 <!ENTITY pgpkey.mbr SYSTEM "mbr.key">
+<!ENTITY pgpkey.mdf SYSTEM "mdf.key">
 <!ENTITY pgpkey.melifaro SYSTEM "melifaro.key">
 <!ENTITY pgpkey.metal SYSTEM "metal.key">
 <!ENTITY pgpkey.mheinen SYSTEM "mheinen.key">