diff --git a/init/install_service.sh b/init/install_service.sh
index 9796088..0482a58 100755
--- a/init/install_service.sh
+++ b/init/install_service.sh
@@ -1,19 +1,20 @@
 #!/usr/bin/env bash
 
-INIT=${1:-systemd}
+INIT="${1:-systemd}"
 
 CONFIG_PATH="${XDG_CONFIG_HOME:-$HOME/.config}"
 SETTINGS_PATH="${CONFIG_PATH}/photocatalog"
 
 SYSTEMD_UNIT_PATH="${CONFIG_PATH}/systemd/user/"
 
-if "${INIT}" == "systemd"
+if [[ "${INIT}" == "systemd" ]]
 then
     cp ./init/systemd/photocatalog.service $SYSTEMD_UNIT_PATH/photocatalog.service
     if test ! -f "${SETTINGS_PATH}"
     then
-        echo "TARGET=<specify target dir>\nMONITOR=<specify dir to monitor>\nMODE=hardlink" > "${SETTINGS_PATH}"
-        ${EDITOR} "${SETTINGS_PATH}"
+        echo "TARGET=<specify target dir>\nMONITOR=<specify dir to monitor>\nMODE=hardlink\n" > "${SETTINGS_PATH}"
+        echo "UPDATECTIME=true\n" >> "${SETTINGS_PATH}"
+        ${EDITOR:-vi} "${SETTINGS_PATH}"
         exit $?
     else
         exit 0
diff --git a/init/systemd/photocatalog.service b/init/systemd/photocatalog.service
index 8c20187..d69fa63 100644
--- a/init/systemd/photocatalog.service
+++ b/init/systemd/photocatalog.service
@@ -7,5 +7,5 @@ WantedBy=default.target
 [Service]
 Type=simple
 EnvironmentFile=/home/%u/.config/photocatalog
-ExecStart=photocatalog -mode $MODE -target $TARGET -monitor $MONITOR
+ExecStart=photocatalog -mode $MODE -target $TARGET -monitor $MONITOR -update_mtime $UPDATECTIME
 ExecStartPre=photocatalog -mode $MODE -target $TARGET ${MONITOR}