diff --git a/lib/schemes.js b/lib/schemes.js
index 45d06fe..fe0f91a 100644
--- a/lib/schemes.js
+++ b/lib/schemes.js
@@ -1,6 +1,6 @@
 'use strict'
 
-const UUID_REG = /^[\da-f]{8}\b-[\da-f]{4}\b-[\da-f]{4}\b-[\da-f]{4}\b-[\da-f]{12}$/iu
+const UUID_REG = /^[\da-f]{8}-[\da-f]{4}-[\da-f]{4}-[\da-f]{4}-[\da-f]{12}$/iu
 const URN_REG = /([\da-z][\d\-a-z]{0,31}):((?:[\w!$'()*+,\-.:;=@]|%[\da-f]{2})+)/iu
 
 function isSecure (wsComponents) {