diff --git a/mod_for_test_scripts/300changePassword b/mod_for_test_scripts/300changePassword
index 5e5b6d080d..34a50dfe2e 100755
--- a/mod_for_test_scripts/300changePassword
+++ b/mod_for_test_scripts/300changePassword
@@ -8,7 +8,7 @@
 TEMP_SHADOWFILE=${ROOT_FS_DIR}/etc/newshadow
 CRYPTED_PASSWD="$(echo "test0000" | openssl passwd -1 -stdin)"
 echo "root:${CRYPTED_PASSWD}:14500:0:::::" > ${TEMP_SHADOWFILE}
-echo "chronos:${CRYPTED_PASSWD}:14500:0:99999::::" > ${TEMP_SHADOWFILE}
+echo "chronos:${CRYPTED_PASSWD}:14500:0:99999::::" >> ${TEMP_SHADOWFILE}
 sed '/^root/ d;/^chronos/ d' ${ROOT_FS_DIR}/etc/shadow >> ${TEMP_SHADOWFILE}
 mv -f ${TEMP_SHADOWFILE} ${ROOT_FS_DIR}/etc/shadow