diff --git a/db/knex_init_db.js b/db/knex_init_db.js
index 7ce1bb48..a3df3614 100644
--- a/db/knex_init_db.js
+++ b/db/knex_init_db.js
@@ -318,7 +318,10 @@ async function createTables() {
     // monitor_tls_info
     await knex.schema.createTable("monitor_tls_info", (table) => {
         table.increments("id");
-        table.integer("monitor_id").unsigned().notNullable();         //TODO: no fk ?
+        table.integer("monitor_id").unsigned().notNullable()
+        .references("id").inTable("monitor")
+        .onDelete("CASCADE")
+        .onUpdate("CASCADE");
         table.text("info_json");
     });