diff --git a/Gemfile.lock b/Gemfile.lock
index 653c20b..b735246 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,7 +27,7 @@ GIT
 
 GIT
   remote: https://github.com/work-design/rails_design.git
-  revision: 05aac51ebab3df772e64860724abd0c28d6b5801
+  revision: 8347a39a95ad59f0c87446b5360db06d1da4b339
   specs:
     rails_design (0.0.1)
       rails
diff --git a/app/models/notice/ext/setting.rb b/app/models/notice/ext/setting.rb
index d2fc56a..8c0be1c 100644
--- a/app/models/notice/ext/setting.rb
+++ b/app/models/notice/ext/setting.rb
@@ -10,7 +10,7 @@ module Ext::Setting
     end
 
     def unread_count
-      r = counters.fetch('total', 0)
+      r = counters&.fetch('total', 0)
       r.to_i
     end
 
diff --git a/package.gemspec b/package.gemspec
index 3e9aad5..a8c7a2a 100644
--- a/package.gemspec
+++ b/package.gemspec
@@ -1,7 +1,7 @@
 Gem::Specification.new do |s|
   s.name = 'rails_notice'
   s.version = '1.0.3'
-  s.authors = ['qinmingyuan']
+  s.authors = ['Mingyuan Qin']
   s.email = ['mingyuan0715@foxmail.com']
   s.homepage = 'https://github.com/work-design/rails_notice'
   s.summary = 'Notification Center for Rails Application'