diff --git a/INSTALL.md b/INSTALL.md
index c5b77cc6d20..6daf02d2577 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -107,6 +107,7 @@ Optional:
   - libpam                           (for PAM support)
   - libtirpc or libquota             (for Quota support)
   - Perl                             (for admin scripts)
+  - po4a                             (for localization of the documentation)
   - tcpwrap                          (for TCP wrapper support)
   - [UnicodeData.txt](https://www.unicode.org/Public/UNIDATA/UnicodeData.txt)                  (for regenerating Unicode lookup tables)
 
diff --git a/doc/manual/Installation.md b/doc/manual/Installation.md
index 0fffab88730..f43af05c2de 100644
--- a/doc/manual/Installation.md
+++ b/doc/manual/Installation.md
@@ -178,6 +178,13 @@ functionality.
   version 5.8 or later. The required Perl modules include
   *IO::Socket::IP* (asip-status) and *Net::DBus* (afpstats).
 
+- po4a
+
+  With the help of po4a, Netatalk's documentation can be translated
+  into other languages. It uses gettext to extract translatable
+  strings from source files and merge them with the translations
+  stored in PO files.
+
 - TCP wrappers
 
   Wietse Venema's network logger, also known as TCPD or LOG_TCP.