diff --git a/etc/mtree/BSD.debug.dist b/etc/mtree/BSD.debug.dist
index f64dc79a297..435da9d14d4 100644
--- a/etc/mtree/BSD.debug.dist
+++ b/etc/mtree/BSD.debug.dist
@@ -37,6 +37,8 @@
                 ..
                 engines-3
                 ..
+                flua
+                ..
                 i18n
                 ..
                 libxo