diff --git a/lib/examples/ja/sweave.lyx b/lib/examples/ja/sweave.lyx
index 5fb9fa06f5..e57bb0d87b 100644
--- a/lib/examples/ja/sweave.lyx
+++ b/lib/examples/ja/sweave.lyx
@@ -50,14 +50,14 @@ sweave
 \use_geometry true
 \use_package amsmath 1
 \use_package amssymb 1
-\use_package cancel 0
+\use_package cancel 1
 \use_package esint 1
 \use_package mathdots 1
-\use_package mathtools 0
+\use_package mathtools 1
 \use_package mhchem 1
-\use_package stackrel 0
-\use_package stmaryrd 0
-\use_package undertilde 0
+\use_package stackrel 1
+\use_package stmaryrd 1
+\use_package undertilde 1
 \cite_engine basic
 \cite_engine_type default
 \biblio_style plain