diff --git a/share/man/man7/ports.7 b/share/man/man7/ports.7
index 318a19ba98c..6e28f85da96 100644
--- a/share/man/man7/ports.7
+++ b/share/man/man7/ports.7
@@ -581,6 +581,10 @@ Additional
 to set when
 .Va WITH_DEBUG
 is set.
+.It Va DEFAULT_VERSIONS
+Override the default variant used for ports
+with multiple concurrent versions in the tree,
+such as database or compiler versions.
 .It Va WITH_CCACHE_BUILD
 .Pq Vt bool
 If set, enables the use of