diff --git a/api/src/utils/validation.ts b/api/src/utils/validation.ts
index 5f4c23c..cede0de 100644
--- a/api/src/utils/validation.ts
+++ b/api/src/utils/validation.ts
@@ -1,6 +1,6 @@
 import Joi from 'joi'
 
-const usernameSchema = Joi.string().alphanum().min(6).max(20)
+const usernameSchema = Joi.string().alphanum().min(3).max(16)
 const passwordSchema = Joi.string().min(6).max(1024)
 
 export const blockFileRegex = /\.(exe|sh|htaccess)$/i