diff --git a/etc/mtree/BSD.include.dist b/etc/mtree/BSD.include.dist
index 839184322d4f..c120f4f4ab17 100644
--- a/etc/mtree/BSD.include.dist
+++ b/etc/mtree/BSD.include.dist
@@ -80,6 +80,8 @@
     geom
     ..
     gnu
+        posix
+        ..
     ..
     isc
     ..