diff --git a/scripts/upgrade b/scripts/upgrade
index 58f0ac5..01469f7 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -141,9 +141,9 @@ ynh_use_logrotate --non-append
 ynh_script_progression --message="Upgrading systemd configuration..." --weight=1
 
 # Set the systemd service settings
-ynh_replace_string "__PORT__" "$port" "../conf/systemd.service"
-ynh_replace_string "__NODEJS__" "$nodejs_version" "../conf/systemd.service"
-ynh_replace_string "__ENV_PATH__" "$PATH" "../conf/systemd.service"
+ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="../conf/systemd.service"
+ynh_replace_string --match_string="__NODEJS__" --replace_string="$nodejs_version" --target_file="../conf/systemd.service"
+ynh_replace_string --match_string="__ENV_PATH__" --replace_string="$PATH" --target_file="../conf/systemd.service"
 
 # Create a dedicated systemd config
 ynh_add_systemd_config