diff --git a/egs/csj/s5/local/csj_data_prep.sh b/egs/csj/s5/local/csj_data_prep.sh
index 55738bf0e37..69e2865e316 100755
--- a/egs/csj/s5/local/csj_data_prep.sh
+++ b/egs/csj/s5/local/csj_data_prep.sh
@@ -45,7 +45,9 @@ if [ ! -d $CSJ ]; then
 fi
 
 # CSJ dictionary file check
-[ ! -f $dir/lexicon.txt ] && cp $CSJ/lexicon/lexicon.txt $dir || exit 1;
+if [ ! -f $dir/lexicon.txt ]; then
+  cp $CSJ/lexicon/lexicon.txt $dir || exit 1;
+fi
 
 ### Config of using wav data that relates with acoustic model training ###
 if [ $mode -eq 3 ]