diff --git a/etc/mtree/BSD.x11-4.dist b/etc/mtree/BSD.x11-4.dist
index 6e1361553042..c4d83d4886ff 100644
--- a/etc/mtree/BSD.x11-4.dist
+++ b/etc/mtree/BSD.x11-4.dist
@@ -303,6 +303,8 @@
             ..
         ..
     ..
+    libdata
+    ..
     libexec
     ..
     man
diff --git a/etc/mtree/BSD.x11.dist b/etc/mtree/BSD.x11.dist
index fc380ee4413f..488ccdf1f0a2 100644
--- a/etc/mtree/BSD.x11.dist
+++ b/etc/mtree/BSD.x11.dist
@@ -191,6 +191,8 @@
         modules
         ..
     ..
+    libdata
+    ..
     libexec
     ..
     man