diff --git a/lib/qiniu/tokens/upload_token.rb b/lib/qiniu/tokens/upload_token.rb
index 0542762..5fb22b3 100755
--- a/lib/qiniu/tokens/upload_token.rb
+++ b/lib/qiniu/tokens/upload_token.rb
@@ -14,7 +14,7 @@ module Qiniu
 
         def initialize(opts = {})
           @scope = opts[:scope]
-          @expires_in = opts[:expires_in]
+          @expires_in = opts[:expires_in] || 3600
           @callback_url = opts[:callback_url]
           @callback_body_type = opts[:callback_body_type]
           @customer = opts[:customer]
diff --git a/spec/qiniu/rs_spec.rb b/spec/qiniu/rs_spec.rb
index 215b0b4..8f2a32a 100755
--- a/spec/qiniu/rs_spec.rb
+++ b/spec/qiniu/rs_spec.rb
@@ -115,7 +115,7 @@ module Qiniu
 
     context ".upload_file" do
       it "should works" do
-        uptoken_opts = {:scope => @bucket, :expires_in => 3600}
+        uptoken_opts = {:scope => @bucket}
         upload_opts = {
           :uptoken => Qiniu::RS.generate_upload_token(uptoken_opts),
           :file => __FILE__,
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index bafee2d..78f5edc 100755
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -8,7 +8,7 @@ RSpec.configure do |config|
   config.before :all do
 #=begin
     Qiniu::RS.establish_connection! :access_key => "3fPHl_SLkPXdioqI_A8_NGngPWVJhlDk2ktRjogH",
-                                    :secret_key => "bXTPMDJrVYRJUiSDRFtFYwycVD_mjXxYWrCYlDHy",
+                                    :secret_key => "bXTPMDJrVYRJUiSDRFtFYwycVD_mjXxYWrCYlDHy"
 #=end
 =begin
     Qiniu::RS.establish_connection! :access_key => "bE21M6FW9V7zAFrBY5psgKOKJQLiBj12qMWTpc57",