diff --git a/doc/src/sgml/acronyms.sgml b/doc/src/sgml/acronyms.sgml
index 2df6559acc..72a45e5106 100644
--- a/doc/src/sgml/acronyms.sgml
+++ b/doc/src/sgml/acronyms.sgml
@@ -408,6 +408,24 @@
     </listitem>
    </varlistentry>
 
+   <varlistentry>
+    <term><acronym>MCF</acronym></term>
+    <listitem>
+     <para>
+      Most Common Frequencies
+     </para>
+    </listitem>
+   </varlistentry>
+
+   <varlistentry>
+    <term><acronym>MCV</acronym></term>
+    <listitem>
+     <para>
+      Most Common Values
+     </para>
+    </listitem>
+   </varlistentry>
+
    <varlistentry>
     <term><acronym>MITM</acronym></term>
     <listitem>