diff --git a/scripts/upgrade b/scripts/upgrade
index 9c95d17..5d7c41c 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -118,6 +118,7 @@ chmod u+x "/usr/local/bin/backup-with-$app"
 chown $app:$app "/usr/local/bin/backup-with-$app"
 
 ynh_add_config --template="sudoer" --destination="/etc/sudoers.d/$app"
+chown root:root "/etc/sudoers.d/$app"
 
 #=================================================
 # SETUP SYSTEMD