diff --git a/lib/shenmegui/controls.rb b/lib/shenmegui/controls.rb
index c2fc963..db739c0 100644
--- a/lib/shenmegui/controls.rb
+++ b/lib/shenmegui/controls.rb
@@ -80,7 +80,7 @@ def sync_events
       end
 
       def initialize(params={})
-        @properties = self.class.default_properties || {}
+        @properties = self.class.default_properties ? self.class.default_properties.dup : {}
         update_properties(params)
         @id = ShenmeGUI.elements.size
         ShenmeGUI.elements << self
diff --git a/shenmegui.gemspec b/shenmegui.gemspec
index 8268a38..58cec5b 100644
--- a/shenmegui.gemspec
+++ b/shenmegui.gemspec
@@ -1,7 +1,7 @@
 Gem::Specification.new do |s|
   s.name        = 'shenmegui'
-  s.version     = '0.3.5'
-  s.date        = '2015-04-23'
+  s.version     = '0.3.6'
+  s.date        = '2015-07-02'
   s.summary     = "什么鬼!"
   s.description = "a simple HTML GUI for Ruby"
   s.authors     = ["CicholGricenchos"]