diff --git a/scripts/change_url b/scripts/change_url
index ad20b77..d903e72 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -113,18 +113,9 @@ fi
 ynh_backup_if_checksum_is_different --file="$final_path/config.json"
 
 domain=$new_domain
-path_url=$new_path
+path=${new_path:1}
 
-cp ../conf/config.json.example "$final_path/config.json"
-
-ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$final_path/config.json"
-ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain" --target_file="$final_path/config.json"
-ynh_replace_string --match_string="__PATH__" --replace_string="${path_url:1}" --target_file="$final_path/config.json"
-ynh_replace_string --match_string="__DB_NAME__" --replace_string="$db_name" --target_file="$final_path/config.json"
-ynh_replace_string --match_string="__DB_PWD__" --replace_string="$db_pwd" --target_file="$final_path/config.json"
-ynh_replace_string --match_string="__APP__" --replace_string="$app" --target_file="$final_path/config.json"
-
-ynh_store_file_checksum --file="$final_path/config.json"
+ynh_add_config --template="../conf/config.json.example" --destination="$final_path/config.json"
 
 #=================================================
 # GENERIC FINALISATION
diff --git a/scripts/install b/scripts/install
index b23f0a9..7c328f7 100644
--- a/scripts/install
+++ b/scripts/install
@@ -125,7 +125,6 @@ popd || ynh_die
 ynh_script_progression --message="Configuring a systemd service..." --weight=1
 
 ynh_replace_string --match_string="__ENV_PATH__" --replace_string="$PATH" --target_file="../conf/systemd.service"
-ynh_replace_string --match_string="__YNH_NPM__"  --replace_string="$ynh_npm" --target_file="../conf/systemd.service"
 
 ynh_add_systemd_config
 
diff --git a/scripts/upgrade b/scripts/upgrade
index 9afcd92..a70d5f3 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -128,7 +128,6 @@ fi
 ynh_script_progression --message="Configuring a systemd service..." --weight=2
 
 ynh_replace_string --match_string="__ENV_PATH__" --replace_string="$PATH" --target_file="../conf/systemd.service"
-ynh_replace_string --match_string="__YNH_NPM__" --replace_string="$ynh_npm" --target_file="../conf/systemd.service"
 
 # Create a dedicated systemd config
 ynh_add_systemd_config