diff --git a/README b/README
index 65b402e..899b46a 100755
--- a/README
+++ b/README
@@ -37,7 +37,7 @@ Then add the line below to config/initializers/mime_types.rb
 For Skiping setting the Format to :mobile
 Add this line to your Application Controller
 
-  skip_before_filter :set_mobile_format
+  skip_before_action :set_mobile_format
 
 Example
 =======
diff --git a/lib/active_device.rb b/lib/active_device.rb
index fcf33ec..ae827e8 100755
--- a/lib/active_device.rb
+++ b/lib/active_device.rb
@@ -34,9 +34,9 @@
 module ActiveDevice
 
   include ActiveDevice::Helper
-  
+
   def self.included(base)
-    base.before_filter :set_mobile_format
+    base.before_action :set_mobile_format
     base.helper_method :is_mobile_device?, :is_mobile_browser?, :is_desktop_browser?, :is_bot?
     base.helper_method :is_mobile_view?
     base.helper_method :is_device?, :is_handset?, :is_brand?, :is_model?, :is_os?, :is_engine?, :is_browser?