diff --git a/etc/mtree/BSD.x11-4.dist b/etc/mtree/BSD.x11-4.dist
index 4839a6219501..c08ac0ff84f7 100644
--- a/etc/mtree/BSD.x11-4.dist
+++ b/etc/mtree/BSD.x11-4.dist
@@ -441,6 +441,10 @@
                 LC_MESSAGES
                 ..
             ..
+            tt
+                LC_MESSAGES
+                ..
+            ..
             uk
                 LC_MESSAGES
                 ..