diff --git a/documentation/ref-manual/ref-features.xml b/documentation/ref-manual/ref-features.xml
index 843cf81d66..7e1829edaf 100644
--- a/documentation/ref-manual/ref-features.xml
+++ b/documentation/ref-manual/ref-features.xml
@@ -78,6 +78,9 @@
                     bluetooth support (integrated BT only).</para></listitem>
                 <listitem><para><emphasis>cramfs:</emphasis> Include CramFS
                     support.</para></listitem>
+                <listitem><para><emphasis>directfb:</emphasis>
+                    Include DirectFB support.
+                    </para></listitem>
                 <listitem><para><emphasis>ext2:</emphasis> Include tools for
                     supporting for devices with internal HDD/Microdrive for
                     storing files (instead of Flash only devices).