diff --git a/lib/rest-client.js b/lib/rest-client.js
index 121f3e6..7f6b2ba 100644
--- a/lib/rest-client.js
+++ b/lib/rest-client.js
@@ -28,6 +28,7 @@ module.exports = class RestClient {
 
   async cancelActiveOrder(params) {
     assert(params, 'No params passed');
+    assert(params.symbol, 'Parameter symbol is required');
     assert(params.order_id || params.order_link_id, 'Parameter order_id OR order_link_id is required');
 
     return await this.request.post('/v2/private/order/cancel', params);