diff --git a/jaildk b/jaildk
index 135f868..2c4ad81 100755
--- a/jaildk
+++ b/jaildk
@@ -450,7 +450,10 @@ rc_mtree() {
                 else
                     run=$j/run/$jail/
                 fi
-                ex mtree -p $run -Ue -f $j/etc/$jail/mtree.conf | grep -v "extra:"
+
+                # needs to run inside jail
+                echo "cat $j/etc/$jail/mtree.conf | chroot $run mtree -p / -Ue | grep -v extra:"
+                cat $j/etc/$jail/mtree.conf | chroot $run mtree -p / -Ue | grep -v "extra:"
                 ;;
         esac
     fi