diff --git a/sys/unix/README-hints b/sys/unix/README-hints
index 03c3fd893..e56dfca7f 100644
--- a/sys/unix/README-hints
+++ b/sys/unix/README-hints
@@ -78,6 +78,11 @@ make WANT_SHARE_INSTALL=1     Place the results of the install/update portion
 make WANT_SOURCE_INSTALL=1    Place the results of the install/update portion
                               of the build into a subfolder of the source
                               tree, rather than in a system-wide shared area.
+
+make WANT_NHUUID=1            Include support for a unique game identifier.
+                              On Linux, libuuid must be installed for this
+                              to build and link correctly.
+
 make VIEWDEPRECATIONS=1       Turn off the suppression of -Wdeprecated and
                               -Wdeprecated-declarations warnings