diff --git a/app/models/user.rb b/app/models/user.rb
index cf12ce0..070125d 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -57,7 +57,7 @@ class User < ActiveRecord::Base
 
   VALID_USERNAME = /[A-Za-z0-9][A-Za-z0-9_-]{0,24}/
   validates :username,
-    :format => { :with => /\A#{VALID_USERNAME}\Z/ },
+    :format => { :with => /\A#{VALID_USERNAME}\z/ },
     :uniqueness => { :case_sensitive => false }
 
   validates_each :username do |record,attr,value|