diff --git a/Prequalification_Challenges/wss/README.md b/Prequalification_Challenges/wss/README.md
index 7338a4e..68a68c7 100644
--- a/Prequalification_Challenges/wss/README.md
+++ b/Prequalification_Challenges/wss/README.md
@@ -4,6 +4,8 @@ Connect to the WSS service and solve the challenge presented: 45.77.137.182:3333
 
 This challenge requires you to have basic problem solving and coding skills. Any language is accepted for get the solution. Please make sure to upload your solution through the form when you submit it.
 
+You need to send the sequence one by one.
+
 _Keccak256: 0x2f2d4bb11521956c486925241ffcca0cbf7b79bbd9be8eafaeb4fab95713b12d_
 
 _Challenge author: Natoshi Sakamoto_