diff --git a/src/controllers/user_to_room.ts b/src/controllers/user_to_room.ts
index 515da72..b20f6e7 100644
--- a/src/controllers/user_to_room.ts
+++ b/src/controllers/user_to_room.ts
@@ -18,7 +18,11 @@ export class UserToRoomController {
         /*
             #swagger.tags = ['UserToRoom']
             #swagger.security = [{ "bearerAuth": [] }]
-            #swagger.parameters['filter'] = { description: '', in: 'query', type: 'string' }
+            #swagger.parameters['filter'] = { 
+                description: "Filter in JSON format. Available fields: user_id (string, uuid, exact match), name (string, partial match case-insensitive), status (string, exact match). Example: {\"user_id\":\"uuid-here\",\"name\":\"john\",\"status\":\"active\"}", 
+                in: 'query', 
+                type: 'string' 
+            }
             #swagger.parameters['limit'] = { in: 'query', required: true, type: 'number' }
             #swagger.parameters['page'] = { in: 'query', required: true, type: 'number' }
             #swagger.parameters['with_deleted'] = { in: 'query', required: true, type: 'boolean' }