diff --git a/packages/db/src/schema.ts b/packages/db/src/schema.ts
index aab705e..cd2bf97 100644
--- a/packages/db/src/schema.ts
+++ b/packages/db/src/schema.ts
@@ -86,6 +86,10 @@ export const userModuleData = createTable(
   {
     id: serial("id").primaryKey(),
     userKey: ss58Address("user_key").notNull(),
+    /* actually points to moduleDataId instead of 
+    the module id (of the network), 
+    but for legacy reasons we keep the name wrong.
+    */
     moduleId: integer("module_id")
       .references(() => moduleData.id)
       .notNull(),