diff --git a/manifest.json b/manifest.json
index 6ce468a..2072a73 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Backup your server with borg.",
         "fr": "Sauvegarder votre serveur avec borg."
     },
-    "version": "1.0.2",
+    "version": "1.0.3",
     "url": "https://borgbackup.readthedocs.io",
     "license": "BSD-3-Clause",
     "maintainer": {
diff --git a/scripts/upgrade b/scripts/upgrade
index ea436f8..c8411ec 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -33,6 +33,8 @@ ynh_clean_setup () {
 # Exit if an error occurs during the execution of the script
 ynh_abort_if_errors
 
-yunohost service remove $app.timer
-systemctl enable $app.timer
-systemctl start $app.timer
+if grep "borg.timer" /etc/yunohost/services.yml > /dev/null ; then
+    yunohost service remove $app.timer
+    systemctl enable $app.timer
+    systemctl start $app.timer
+fi